Just found out from a friend about likemind, and the concept sounds really cool.
No sales pitch, no 'networking', just like-minded people sharing ideas over a good cup of coffee. Simple, and to the point.
Even the website is minimalist in its design. It's really nothing more than a map to show you where the meetings are happening.
It has been called one of the top ten social networking sites for creative people (according to Lateral Action), so if you have some time, feel free to check out one of the meetings. They sound like a lot of fun.
Unfortunately, there is not currently a likemind set-up for Philly, but I just offered to be a host, so once I am 'approved' (I hope), I will let you know where the meet-up will take place.