On our site there can not be nudity, dismemberment, advertising of tobacco and alcohol.
Advertising can be just not intrusive (pop-up, blinking, requiring action ...), which in the interests of the advertiser also.
Advertising can be placed on the entire site:
In general, one page can not have more than 3 blocks of advertising (or banners), and on most pages no more than 2.
You can advertise: