There is a disclaimer at the bottom of the site stating that this site is not affiliated with lucasfilm, nor is the site in any way commercial. I only heard stories of Lucasfilm going after people who are making money off of his property.
About the url: if lucas wants it that bad, he can buy it
However, I don't think it will be a problem. There is also a non-commercial site that is called starwarsarchive.com and they've been arround since 1997.
Just one note: I did write earlier that images would be made available through the forum in higher resolution. I would be nice to make sure you've read everything before making assumptions.
Darth Neo