imagine usernames were centralized on the entire internet 
that would actually suck but once you got it you don’t have to deal with having different usernames on different platforms
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Honestly, heck yeah. This makes a ton of sense.
although it is a bit imperfect. while adding a cost to usernames does make them a little more permanent, the fact that they can expire leads to lots of edge cases that would have to be handled.
that’s true, we should just have phone numbers as usernames at this point