Just wondering, is it okay in their TOs to put inline ads and itnersitial ads on proxified web pages on Adbrite?
Yep, I don't see why not. They aren't particularly fussy about where their ads are displayed. Saying that, they have to approve your ad zone anyway.
I'd like to know this as well, for AdBrite. I've had tons of ads on proxified pages, but for some reason, the AdBrite codes disable my entire index.php.