There have been a few previous submissions and threads on this question - you might want to look up some of the previous discussions. Here are some of them:

http://news.ycombinator.com/item?id=2073239 Guide to Finding a Technical Co-Founder

http://news.ycombinator.com/item?id=2056630 Can't Find a Technical Co-Founder? Do It Yourself

http://news.ycombinator.com/item?id=2018618 Non-programmer founders: learn code first, find tech co-founder(s) after?

http://news.ycombinator.com/item?id=1983569 Finding co-founders, where and how

http://news.ycombinator.com/item?id=1882090 How to Find a Technical Co-Founder

http://news.ycombinator.com/item?id=1872960 Finding a Technical Co-Founder

http://news.ycombinator.com/item?id=1866516 Dont look for a co-founder. Find a Right Hand Man

http://news.ycombinator.com/item?id=1823724 Find Co-Founders, Don't Get Screwed

http://news.ycombinator.com/item?id=1820875 Not in the Valley? How do you find co-founders?

http://news.ycombinator.com/item?id=1779750 How To REALLY Find A Technical Co-Founder

http://news.ycombinator.com/item?id=1779092 How find co-founder online?

http://news.ycombinator.com/item?id=1778191 Ask HN: Finding a Co-Founder at a Hackerspace

http://news.ycombinator.com/item?id=1689751 Can't Find a Technical Co-Founder? Do It Yourself

http://news.ycombinator.com/item?id=1677066 Network Launches to Help Entrepreneurs Find Co-founders

http://news.ycombinator.com/item?id=1576186 Last Call: Pitch to find a Co-Founder at The Founder Conference

http://news.ycombinator.com/item?id=1575105 Does "finding co-founders" ever work?

http://news.ycombinator.com/item?id=1567469 Ask HN: Where is the best place to find a co-founder?

http://news.ycombinator.com/item?id=1512715 How to find a co-founder

http://news.ycombinator.com/item?id=1511965 Ask HN: How do you find/meet tech co-founders outside of the hotspots?

http://news.ycombinator.com/item?id=1509775 Finding the Right Co-Founder for Your Startup

http://news.ycombinator.com/item?id=1373858 Strategies for Finding the Co-Founder of Your Dreams

http://news.ycombinator.com/item?id=1367637 FoodSpotting founder on finding co-founder, marketing & female entrepreneurs

http://news.ycombinator.com/item?id=1347723 Ask HN: How do I find the right co-founder?

http://news.ycombinator.com/item?id=1307167 Help a Startup Out - Get feedback, find co-founders, find advisors, etc.

http://news.ycombinator.com/item?id=1297382 Ask HN: Where To Find Design Founders

http://news.ycombinator.com/item?id=1294713 Vokle founder: how to find great programmers & making the most from events

http://news.ycombinator.com/item?id=1238947 Ask HN: I'd like to find Co-Founder(s) / Developers

http://news.ycombinator.com/item?id=1086852 How to Find the Ideal Co-founder: A Seattle Startup Experiment

http://news.ycombinator.com/item?id=912667 Find a co-founder with this new MeetUp

http://news.ycombinator.com/item?id=876010 Finding Your Co-Founders

http://news.ycombinator.com/item?id=849737 Ask HN: Finding Developer/Engineer Co-Founder?