For side projects you should checkout http://www.thinkero.us http://www.thinkero.us, they love seeing new ideas or hearing about issues you see around you that

For side projects you should checkout http://www.thinkero.us http://www.thinkero.us, they love seeing new ideas or hearing about issues you see around you that you wish could be fixed. It's more of a community for open innovation and collaboration with less of the pressures than some of the more financially incentivized sites listed above.