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There are no ex-Twitter devs at Bluesky and only one ex-Twitter employee who started this month.

Custom feeds on Bluesky are federated so that anyone can create a new one using any algorithm they wish. There are already many thousands to choose from.

You seem to imply that the founders of Bluesky were the ones pushing for those algorithm changes at Twitter? Do you have any more information on this? I find it hard to believe that this is a decision made by developers.

Using a hashtag on twitter reduced your posts discovery on twitter? Why did they do that?

I would guess that on the whole hashtags provide negative value to users. It's a neat idea but it almost immediately devolves into SEO spam.

Users _invented_ hashtags and the platform subsequently provided official mechanics for them. Just as users invented retweets and used to do them manually. People really value discovery, it's just that it's so vulnerable to the SEO arms race.

Objectively wrong.