It will be specialized, but it will be nothing like twitter. =)

There is a cost that comes with social media as we use it today: it leaves you without an incentive to do the actual work.

The minute you "Like" something on FB, for example, you get all the "you're a good person" signals in your brain, you even get the approval of your peers, who themselves feel good for approving your good intentions. Meanwhile, nothing tangible _actually_ happened. No progress has been made, no energy invested, no change can be expected. You've just wasted all that drive to do something on a meaningless click.

We'd like to break that cycle. We want to make contributing easy, but we'd like your contributions to actually matter in the aggregate. More importantly, we want to tie reputation and social signals to meaningful work. Saying "I approve" or "I like" will get you no cred, saying "I've done" will get you a lot of respect.