The Pathfinder Open Beta playtest ended this week--now it's all previews, talk, and snippets until the PFRPG release at Gen Con Indy. I'm optimistic about Pathfinder and its continuation of OGL support, but will withhold final judgment until we see a final product.
In any case, in honor of the closing of the Beta, here's a few Pathfinder fan site I've discovered that folks may wish to check out:
Pathfinder Wiki: This pleasantly-designed site is a repository for information on the Pathfinder setting of Golarian, as well as how concepts such as magic work in the RPG.
pfogc: If its Open Game Content, and it's in Pathfinder, you'll find it here. Clean and simple, functional layout.
Pathfinder Portal: Not a whole lot going on here yet, but there are a few nice links here and there. It does feature nice, regular news updates.
I'm sure there's a few more sites out there (and will be many more to come), but that's a nice start to get you going.