Here are some D3 related links I think you will find entertaining and/or useful.
As more good sites appear or current ones transition to D3 material I will add their links.
If you run a site or know of one you would like to see added feel free to  Email Me  the info.

 Blizzard The Official D3 Site
    Blizzard D3 Section

 Battlent The Official D3 Forum
    Bnet D3 Forum

 Wikipedia article about D3
    Wiki on D3

 Dii was a great D2 reference site. I'm sure Diii will continue that tradition.
    Diii Site