I'm obsessed with the idea of social TV.
Building a product is easy. But building the company that builds the product is hard.
I learned early on not to feel badly about reaching out for help, and not to feel embarrassed about saying that you're in over your head.
Do what you love and the rest will come.
Don't let people tell you your ideas won't work.
One of the biggest hurdles about Foursquare is you need to remember to use it.