Stay vigilant. I would never solicit money. Thanks @voxdafox.newgrounds.com!

Thanks everyone for offering to pitch in to support the For You feed! I want to keep it as a pure hobby project with no financial side. I'm fine to do this indefinitely, so please don't worry about the sustainability.

The For You feed is overloaded right now. Please try again in a minute or two.

@bsky.app created a featured feed post for For You but it overloaded my computer and they agreed to delete it for now. The request processing time jumped from 0.2s to 50s. It is getting down to 45s, but it is not recovering super well.

The For You feed has been spreading like a wild fire yesterday and today and got 10K likes - which is crazy compared to the 6K likes it accumulated since ~May. Thanks to all the likes, For You overtook the defunct Skygaze feed in the search results - no more confusion about which is the real one.

Here is why Bluesky is seeing a lot of activity today:

In For You the "show less like this" feedback is currently only used to disconnect you from people who liked that post. The effect is that the likes of those curators will have less weight for you and you will see less of what they like in For You.

A new promising experiment with the way For You works has started: leaflet.pub/9a8bef7f-c39...

The growth of daily active users of For You has been mostly driven by "large sharing events". But since the last such event the trend has changed and the number of users started to steadily climb up:

Bluesky put the "What's up" prompt at the top. It will be interesting to see if this moves the poster metrics. It made me post today :)

For the last ~25 days I've been running an experiment on For You that gave more weight to "show less like this". The results are: -3.22% fewer "show less like this" (20,957 -> 20,282) +17.24% more "show more like this" (4,083 -> 4,787) +1.91% more likes (1,067,971 -> 1,088,331)

How is this new "dislike" interaction going to be sent to custom feeds like For You? Would it be a new interaction type like "app.bsky.feed.defs#interactionDislike" or the existing "app.bsky.feed.defs#requestLess"? @internet.bsky.social

I've seen a few people complain about For You being too good at surfacing people's alt accounts. I think to solve this we can let people opt out their account posts from appearing in For You. If you want your account posts to not appear on For You feel free to DM me with "remove me from For You".

For You now keeps better track of posts that you've seen. If you accidentally refresh it the post that was just there will be gone. If you ever need to go back to the recommendations you've seen in For You - use this simple feed:

Indeed, I'm seeing a lot of app.bsky.feed.defs#interactionSeen in the For You logs! With this change released I can clean up a bunch of hacks (based on scrolls and likes) I used to infer seen posts.

What is between O(1) and O(N)? It is usually O(log(N)). This sounds like a tree. What if the sequence was represented as a tree? Each node has a fixed length vector, each leaf is a sequence element.

For You will be down for a few minutes. I need to reboot the pc because Ubuntu updated nvidia drivers and I can no longer play games. That's one downside of serving the feed from your home pc.

I ran the below experiment for two weeks. The results at the user-level metrics are mostly neutral. Slightly fewer users were pressing "less like this": -1.4% (not statistically significant)

Got oauth working and you can view someone's collections: rankthat.net/profile/spac... This is still a client-side webapp talking directly to PDS. No AppView.

We now have the demo app write to the PDS when you login with an app password rankthat.net/login All I needed to tell Claude was: "let's now do the heavy lifting and switch to real PDS storage" Added my first item: pdsls.dev/at://did:plc...

I want to make an atproto app for creating collections of anything - create book shelves, rate movies, collect science papers, fictional character tier list, etc. Before committing to a lexicon I want to understand what a good user experience would look like and then build the corresponding lexicon

Here is an idea how to make the discourse healthier: change the incentive structure of the reply section. Right now the replies are sorted by the number of likes. This is extremely gameable. 🧵

Would anyone be interested creating an avatar for the For You feed in exchange for a credit in the feed description? I have no idea if this is a fair offer.

I started an A/B test for this idea. 50% of the For You users will see posts ranked by the new logic. The goal of this experiment is to reduce volatility of For You caused by your most recent likes. I will share the results in a week or so.

The volatility of For You has been brought up before: bsky.app/profile/xeni... The weight of your recent likes is spread out over fewer more recent likes. Detail are in the quoted post thread.

7 days later and we have some results from the experiment. When we demote popular posts we see: - 8.26% fewer "show less like this" (3340 -> 3064) - 0.24% more posts in For You were liked (242438 -> 243024) - 2.43% more feed loads (438867 -> 449537) Per user and per request metrics:

If you have any suggestions for the For You feed please feel free to add them in replies. (I'm not quite up for managing an issue tracker) @gracekind.net

It looks like the Bluesky outage is over and the firehose is streaming again: wscat --connect "wss://jetstream2.us-east.bsky.network/subscribe?wantedCollections=app.bsky.feed.post"

@bnewbold.net @hailey.at @jaz.bsky.social it looks like the Jetstream firehose stopped working at 1h 24m ago (last timestamp 1758705609) I don't know if this is just for me or everyone.

The Videos For You feed has been getting a ton of likes today. I gather @skylight.social is popping off. Are people exploring alternatives to TikTok?

I started a new For You experiment today that gives less priority to popular posts. 50% of the users on a given day will see popular posts demoted: score = score / power(popularity, 0.2) 50% will see no change (control arm). "popularity" is the number of likes and reposts a post has.

The algorithm behind For You is very simple so it's easy to see why any post shows up. Curious? Then: 1. Go to linklonk.com/bluesky 2. Enter your user name 3. Enter the post url to explain 4. Hit Submit

Have been running this For You feed experiment for a week now when we demote posts that were liked only by a single curator (ie, a user that shares a like with you). In the experiment the users are less likely to do all of these: - show less like this - show more like this - like a post

I may have found a bug with the Android app client in sendInteractions. It looks like Android app does not forward the "feedContext" from getFeedSkeleton response to sendInteractions request. It is empty. @hailey.at would you know who could help with that? Context below

Found and fixed a bug in For You. The intention is to count likes and reposts of the same post only once per user. From For You perspective we just care that user B endorsed item A. For example, if you like and repost something it should be treated the same if you just like or just repost.

A new For You experiment started. Now that we have "show more like this" and "show less like this" we can tell not only which For You posts people like but also what they don't like. This is helpful to identify some potential algorithm improvements.

I ran a little experiment on the For You feed for the past 6 days. The experimental change prioritizes posts that have more "paths" from you. A path is: 1. You liked post X 2. Someone else liked post Y 3. They also liked post Z today. More details in the quoted post. Results below 🧵

You can now use "show more like this" and "show less like this" in the For You feed. (this is being rolled out so you may need to update your Bluesky app) Here is how it works in For You 🧵

The term "collaborative filtering" sounds weird to me. Why is it "filtering"? Filtering is binary - something either passes the filter or does not. Filtering focuses on the negative part - getting rid of the bad stuff.

Created a "For You" feed that only shows video posts. The algorithm and the codebase is exactly the same as the regular For You. It simply filters out posts without videos when reading the Jetstream firehose. Could be useful for something like @skylight.social

Custom feeds stopped loading for me, including For You and SkyFeeds Discover I'm using web client.

Welcome to your ✨For You✨ feed This feed is powered by your likes! The more you like, the better your recommendations become. To get started, tap the ❤️ on a few posts in your Following or Discover feeds and come back here for more great content.

For You sometimes shows posts that were liked by the a single user that you happen to have to have a few likes in common. If that user happens to like a mix of different topics then you get a bunch of random stuff in For You. I have an idea of how to solve it. (1/?)

The For You feed will be down for 10-20 minutes. I need to install an additional SSD which will hold the Bluesky data. Wish me luck!

For You feed is a simple algorithm that has no AI or Machine Learning. It does have a few knobs, parameters, rules that affect what you see in For You. One rule prevents multiple posts in a row to be coming from likes of the same user. I would push down consecutive posts like to get...

Good to see progress on a Bluesky change to support "Show less like this" for custom feeds like For You: github.com/bluesky-soci... Hopefully it lands soon!

For You feed is #2 most shared feed according to blueskyfeeds.com/feeds/top-sh... This is impressive given the #1 feed is filling up the gap for a missing feature - bookmarks. Thanks everyone for helping spread the word!

Got a backup power source for the For You feed server - EcoFlow DELTA 3 Portable Power Station. Now if the power goes down at home the For You feed should continue to function.

Do not worry about sustainability of the For You feed. It is a hobby project that has barely any cost and I'm planning to run it long-term. It runs on my home PC, fronted by a tiny VPS ($10/month). With the current setup it should be able to run 30x the peak load (1 qps -> 30 qps).

It's great to see so many people trying out the For You feed in the last two days! Also I'm happy to see people recommending it to others.