I think a certain percentage are created just for fun, or in the heat of the moment then forgotten about. AW is free and some people believe it or not do like to entertain themselves 'pretending', and they could be male or female. I think it's less likely to be for fun on Vivastreet because you do have to pay to advertise on there, however bait and switch could be operating on there and they aren't as hot on stolen photos. They told me to go to the police when I pointed out the photos on a particular profile looked like they were lifted from a model site. Fakes aren't limited to those 2 sites either, nor women, I've seen photos from 'stock' image websites on profiles on other directories.