Flopstarter - A platform for bad ideas
Flare by GoDaddy - Discover, give feedback and support startup ideas
Idealist - Volunteer, work, and intern job search
Wittycircle - Networking tool for entrepreneurs, makers and curious minds.
The 25 Days of Ideas - Free resources for coming up with startup ideas
Pitchstack - Become an armchair VC and judge the pitches of the day