Facebook and even Instagram are at odds with the principles of the open web.
Related: Aaron is playing whack-a-mole with Instagram because he provides a servie to let users export their own photographs to their own websites.
Never mind their recent data breach—the reason to avoid Quora is that it’s a data roach motel.
All of Quora’s efforts to lock up its community’s contributions make it incredibly difficult to preserve when that they go away, which they someday will. If you choose to contribute to Quora, they’re actively fighting to limit future access to your own work.