What did people crowdsource in 2011?

blog.mobileworks.com

We saw several even more unusual tasks in 2011 in small quantities, but that's a blog post in itself.

Suffice it to say that if they're any indication of what's to come, crowdsourcing is likely to crop up in some unexpected places in the year ahead.

presently, is the use of crowdsourcing mostly driven by the US?

No, surprisingly. But it's been largely western customers that have used MobileWorks.