Overview
You may have hooked up with FB, in and other number of social network sites. This one provides a platform to get introduced to the folks who has similar interest. This site not only provides platform to interact by finger tips but also chance to meet up! There is nothing like meeting in person.
Personal experience:
So far Ive attended two events that I got to know through this forum. One for start-up entrepreneurship and the other for career development. I was amazed by the group of folks that comes to these event organized by spirited individuals/organizations. It provides nice platform to showcase ones talent as well.
Privacy
You can expose yourself as much you want by hooking up FB, in, tweeter or carefully cover your track. Based on your association to a group, you could get recommendation like folks in your group are also member of salsa dance group. get the idea?
Verdict
Overall Im pleased with the opportunity it presents to connect with the folks who has same brain wavelength, face and smell:)