Dating sites are for people who have period breath.

[The Summoner of Leviathan]

Took the words out of my mouth. No reason dating websites should be more frowned upon than any other method, if that's what people choose to do.

Except for the whole physical chemistry/pheromone/body language thing.

And this is why if the person is of interest, you actually go and meet them. Dating sites function as a means to meet people with common interest in your area. If I actually had a cup of coffee or a drink with every guy I ever chatted to, that'd amount to a lot of money I don't have. Basically, you chat a bit to the person then you meet them if both parties are interested. That's where you get the body language and stuff. If things turn out good, then you go on more dates. If not, that's that.