xkcd2

Old Accounts

[[A figure sits at a desk, using a laptop.]] The Internet is filled with derelict accounts aggregating news about friends long forgotten. <<Click>> Laptop: Uhh, is everything OK? <<Click>> Laptop: Dude, what the Hell? <<Click>> When you find yourself drifting away from a community, remember to clean up after yourself by slowly unfriending everyone, one by one, in the reverse order that you added them.

If you close an account while it's still friends with people, it contributes to database linkage accumulation slowdown, which is a major looming problem for web infrastructure and definitely not a thing I just made up.