Design a way for people with similar interests/hobbies to connect.

Dave, Ayush – One of the things I would recommend, in addition to the awesome answers that you both have presented is the competitive landscape. Looks like the second product (Dave’s solution) is actually a lot like Facebook groups. Meetup is another product that helps people with similar interests get together. What do these solutions already provide and how will your solution – solve a problem that is not solved by these products?
What about suggesting a product that collects your interests (by asking you for input or having you login via Facebook, Google or Twitter) and then shows groups with similar interests in one location – scrape information from Meetup, Facebook groups, Facebook events, Craigslist groups etc all in one place. That way – a unique need of seeing all groups with similar interests collated across multiple social media platforms can be shown in one place.