[icpmacdo]

I think thats the main problem with Twitter, saturation. Its mainstream enough the regular people are not likely to jump on Twitter now if they already haven't.

[somebodyother]

This. Nobody who could conceivably make an account is just waiting to hear about this hot new thing called microblogging.

[bluepostitnote]

And yet Facebook is still signing up users

[incongruity]

I'd argue they're better about extracting value from network effects – Facebook allows you to broadcast, but it really encourages interactions... the value grows a lot more with your network... whereas, following more people on twitter just makes it harder to follow.

[dredmorbius]

My understanding was that FB growth stalled in the US./EU in 2012, slipping since. No?