Sugar Daddy websites. Are they legal prostitution?

I was watching Dr. Phil (which is something I don't do very often) and the topic was sugar daddy websites and prostitution. They had a website owner, some of his employees, and a former federal prosecutor on the show. Both sides debated the topic very well.

Here is what I have to say on the matter. I don't use websites like that, nor do I plan on using one in the future. However, If some idiot millionaire wants to meet a certified gold digger through this website to pay out the nose for whatever the gold digger gives them, its their idiotic choice to do so. As per the saying goes, 'A fool and his money are soon separated.'

As far as it being called Prostitution...I disagree. Its no more than a dating site for morons with money and gold diggers that want money. The website matches two people like any other dating site and people pay a monthly fee for access. Whatever happens after that is not up to the website. Its no different that e-harmony, match.com, or any other dating site. If paying money for a dating site to match you up with someone is prostitution, then All paid dating sites are guilty.