Thd Underdogs site hadn't been upgraded since january 2006, I think? or was it 2007? My best guess is that the girl who runs the site just paid for a 2 year or 3 year old hosting of the site and then forgot all about it. And then it slowly died.
I, too, hope it come back.
There isn't anyone of you that has an e-mail adress ? for the owner so you can write to her or asking her about what happened.
It is also possible that the site is undergoing a massive change at the moment.