Advertising

I was wondering .....
I've never seen any adverts for porno websites between programs on any freeview channel, even late at night. Is this because they choose not to advertise, or are they prevented by oftel?
If it is the latter, how do channel 46 PartyGirls get away with advertising the girl's web sites during the program?

As far as I know, there is no rule against advertising adult products or services after the 9:00 watershed.

Nope there's no rule to stop them doing it...it doesn't seem right though somehow...