<a target="_blank" href="http://www.topi.com/">Topi</a>, a mobile event networking app that wants to help you find the right people to talk to at large conferences, today announced that it has launche
<a target="_blank" href="http://www.crunchbase.com/company/meetup">Meetup.com</a> has been around for a while, but growth has been staggering of late. The company recently announced that it has surpas