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23f31d0

@brendt raised an issue this morning that is very likely true: the more users we add, the more important categorization becomes. once you arrive, you should instantly get connected to groups that talk about the topics you like, php, laravel, next, rails, all of those we don't…
Embedding similarity: turn every post, group and topic into a vector, then tag each one with the topics it sits closest to. on signup, pull languages and repo topics from their public GitHub, pre-fill a topic picker or "tune your feed" page, and then suggest the closest groups.

commit 23f31d0