User blog comment:Lightening McQueen/Wikis that may have to deleted/@comment-24661007-20140520202807/@comment-1142365-20140521010421

"Out of interest, how many 1 page wikis are there?"

Most spam wikis only consist of the mainpage. And there are a lot of spam wikis. So I would say, a lot :P - though you are unlikely to come across them.