pravaas.org is based on a simple idea:
pravaas.org used to be hosted as a social network on ning.com (pravaas.ning.com). In May 2010, ning.com announced they were going pay-only. This aggravated one of the founders and he decided to take matters into his own hands and host the entire network himself. The result is a much simpler and easy to use service. And to top it all, you do not need to sign up for a ning.com account. To post a message you just need a Google Account! Sometimes, disruptive changes are for the better!
Check out the archives to get a sense of the kinds of questions that have been asked in the past (like this one: Acing the technical interview).