TeamXbox has posted a note on their website saying that they cannot afford to keep the site running at this time. Here's a snip:

We regret to inform our faithfull viewers that TXB is down at the current time due to an inability to continue to afford our monthly costs. The site is growing faster than the internet economy and we are simply not bringing in enough revenue to make up for the huge growth the site has receieved. Our site has tripled in traffic over the past 2 months and the increase in bandwidth is more then we can make up for. Since we have started, we have funded this site out of our own money, and we have no more to put in toward the site.

TeamXbox would like to make a return, but they can't do it without you. If you have any funds you would be willing to donate to the site, you can do so via PayPal. As they say, every little bit counts.