So I'm working on this Directory site. We have a list of 20,000 businesses, and many of them have a link to their website.
The owner of the website asked me if we could change these links to point to a page that would embed the website in an iframe, with an ad on top (to make more ad revenues).
To me it sounds a bit shady, but besides breaking the back/forward navigation, I don't see any harm done.
Do you guys see any problem with this approach?