Health - Ben's Friends, http://www.bensfriends.org/. Online patient communities for people with rare diseases, over 15,000 people joined so far.
Dating - Startup Dating Site with a Scientific-Basis
Small Business Web Writing & Marketing - Not as much of a priority currently in my business life; however, I began my career as a freelance marketer and writer for small businesses.
I personally love entrepreneurship & all related areas. Anything interesting, compelling, or innovative, I have a soft spot for. I love hearing people's ideas, methods, & strategies in their own business ventures, as well as how they overcame obstacles.
I love meeting new people so feel free to introduce yourself!