Now, Digiday reports that the adult video site PornHub is looking to expand its pool of mainstream advertisers.

If successful, the push for non-porn advertising dollars could inspire a similar trend across the adult video industry, which has struggled to generate revenues as people have shifted to piracy-fueled, free 'tube' sites like PornHub instead of paying for porn. 

Earlier this month, PornHub ran pre-roll advertisements for the movie "Don Jon," the Joseph Gordon-Levitt film about a man who is addicted to porn.