It depends on the segment of the market you are talking about.
Niche sites. Unaffected (or minimal).
More mainstream porn sites. Harder hit.
TGP's, some, even more so.
While you did not specifically narrow it down to sites dealing with content, I would say that those more 'mainstream hardcore' are more effected then other segments of the 'adult online biz' than some others.
I would say it could vary widely.
