I share your concern.
The main reason I share some Twitter links is that I think they're relevant (this seems to be confirmed by the positive votes).
Deciding which big lab to join is a very important decision that many EAs are making.
(Personally, I often find myself going to Twitter because there are very relevant news updates regarding AI safety that aren't shared in the forum)
I agree that upvotes are an update that the content was useful and that might mean I'm just off here.
I guess I think relevancy or interest isn't the only thing we should be tracking; I think the forum adds value because, unlike Twitter, the posts and replies here are usually more thoughtful and more carefully investigated. To put it another way, if I just wanted relevant news and updates, I'd go to Twitter. Here, I'd hope for more commentary (e.g. "Jan has joined Anthropic. Here are some thoughts I have about this and how they might be relevant for EAs deciding which lab to join").
I'm not saying you personally should have done this and, again, I am grateful you made the effort to share this.
I think, at this point, EAs (including 80k Hours) publicly boycotting OpenAI, and refusing to work there, and explaining why, clearly and forcefully, would do a lot more good than trying to work there and nudge them from the inside towards not imposing X risks on humanity.
Appreciate the suggestion! Just wanted to mention that this already exists - users can add the "News relevant to effective altruism" topic to posts, and they can change how posts in this topic are weighted in their frontpage list.
You might like David Nash's Monthly Overload of Effective Altruism.
It has a combination of forum/EA org updates and relevant news.
I can also recommend Shakeel's Transformer newsletter for AI-specific news.
A potential solution would be for the forum to have a tag called something like "News" and then with the "Customize feed" feature let people choose between hide/reduce/default.