We're so sorry...  there's not a lot we can do to help here. :-(.

However, Google may have a copy of your site saved in their cache!  You can access it at a link like this one:

• http://www.google.com/search?q=cache:www.xanga.com/home.aspx?user=TheXangaTeam

Just substitute in your username for TheXangaTeam, and you should see the old copy of your site.  Hope you're able to retrieve your site!