Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
rysolv - Fix open source issues, get paid
Facebook Local - Discover places to go and events happening near you
uTask - Hire a coder by having them do a real-world task
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Text A Coder - Send a text, get a developer and project manager instantly