I run Fork the Cookbook (http://forkthecookbook.com). People have claimed it to be like Github for recipes.
I used to run edgeyo (http://edgeyo.com) - a matching platform for investors and startups [dead];
and Strangers for Dinner (http://strangersfordinner.com) - we match hosts and attendees to dinner parties. Make food, make friends [dead].
You can contact me here: chewxy [at] gmail dot com
My personal blog is http://blog.chewxy.com . Be warned. Lots of nonsense in there.