Well, likely the advice you got in the past sucked, was incomplete, or you didn't follow it and only followed the parts you wanted to.
I didn't click on that link, but if it's just a dating site, your reaction is over the top. Shred of self respect? Surrendering? Please. It's the 21st century, dating sites are incredibly common and the most normal of people use them. If you go into them with such a haughty attitude and look like you're from attack of the geeks, then sure people will laugh at you and think that's exactly the type of person dating sites are for, but if you're a normal, confident outgoing person, then no it is not a strange thing at all.
You have preconceived notions about certain things it seems, and a lot of it stems from romanticized concepts of love and morality and justice in the world. The world is not like that. The sooner you realize that the better.