First of all you should know the forum has always operated at a loss. The banner ad you see on top maybe covers 20% of the forum server bills.
Forum is 'financed' by the mainsite.
While that is not really a problem I'm sure you all understand lots will change in the coming months with the Xbox 360. The revenue from modchip stores will drop at a high rate and we'll have to make sure we can keep everything alive including all the sites we host for free (allxboxskins, xbox-saves and many many dev teams).
Also for now these ads are just a 'test' ... it will run for a few weeks and I'll see if it's worth it. I tried to search for the best way of advertising without crapping up the site with pop-up/unders, layers ads or other shit. These ads (I think) are very clean, they only show up if you go over it (noone forces you to ... and diff. between normal links and these intelliTXT ads are very clear, so you can't confuse them) and are very targeted (so they make sense).
I also plan to make a separated skin (of the 'xbox-scene v2' skin probably) that will be without those ads, so that people that really have problem with these ads will be able to remove them.
My theory is that people who really hate ads, won't click them, so I can aswell not show them to those users. That's why I have no problem with ad blocking software either.