I read an indepth scientific report written by clever people that stated if you put kittens onto your web site your sales would increase by 20%, regardless. Basically, if you look at any sales advertising, purchase stage and take two groups, one with kittens, and the other without, the one with kittens will have 20% sales return.
I wanted to try that with my online soldier of fortune service company, but instead I used naked girls, and that worked just as well.