There aren't too many sites out there devoted to goatees but there are some. Below are the ones I think are worth a look.
More relevant ones are up top.
The only site I know of that is purely devoted to goatees. There is plenty of information on what it means to have a goatee and how to maintain it. A Brief History of the Goatee John Sulak gives us well written and thorough article on the origins of the goatee. A great read for you goatee historians out there. A history section and plenty of goatee photos, including celebrities and tons of street goatees.