The three critically different things to me: - they have/had a critical size. No other social media was that big, and size matters. - they required (still do?

The three critically different things to me: - they have/had a critical size. No other social media was that big, and size matters. - they required (still do?) real IDs. Forcing people to use their real name is a special kind of awful, especially when it's the main network - they push a unified account platform for everything they owned. Other companies tried too but most failed (I also hate Apple for that, if you were to ask).