The top search term for British-based users of pornography websites was "British", followed by "Indian" and "MILF" - an acronym referring to pornography featuring older women.
In the US as a whole the most searched-for term was "MILF", followed by "Teen" and "College". However, there were significant differences between certain states.
Searches for gay pornography were popular elsewhere in the world too. The top search term in Australia was "Aussie (gay)"
Source: PornMD