I'm really loving how fast they are pushing updates and just using Bootstrap in general. I've already used it for my startups new website (http://www.sponsorfied.com), which turned out pretty awesome, and the time I saved by using Bootstrap was pretty incredible.
I'm definitely using it for any side projects or sites I need to toss up without spending days on them.
I'm definitely using it for any side projects or sites I need to toss up without spending days on them.