I was on POF for 2-3 years... all I can say is ... stay away from it or it will destroy you.
First, I'm not a top model, i'm not a monster either ... I'm not a genius, i'm not stupid either ... One on one, I'm not so bad ... Plus I have a charming nice deep roaring voice.
... So I can certainly meet new people and date them.
However ... I sent tooooons and toooons of messages to girls ... I improved my profile, I improved the pictures and all ... In 3 years, I got maybe 5 replies and I met 3 of those girls. 2 of them we agreed that there was no match, and I dated the 3rd one for a couple of months and realized it was going no-where. But I sent hundreds of messages. Meaning I spent tons of time reading and sending message and asking what was wrong with me or my profile ...
This will slowly eat up your self-confidence and make things even harder.
That said ... POF can work. If you are good looking and patient, you'll eventually get something out of it. But its not worth it. I say that because dating is a number game. In order to find a good match, you have to meet loooots of girls(unless you are crazy lucky) ... if you meed 3 girls in 3 years, chances are extremely low. If you go to some events and you meet 50 girls in a year, you chances are waaaay higher. You'll meet one and you'll be like "man, i didn't see it coming" ...
So POF will work .. but its a highly inefficient method unless you are one of the rare very gifted good looking top-model perfume commercial dude.
I watched two very interesting videos on youtube at some point, and that convinced me to abandon the site.
The first video, the guy wanted to display one dark side of the site. He created a new profile, and put one single picture. A top-model dude, shirtless with abs on a beach. You could clearly see that it was right out of a magazine. He didn't put any info ... just one short description. He simply wrote :"Hey gurls. I like to party." ... Then he saved it ... within few seconds ... his mailbox started to fill up ... very very quickly ... and within few hours he had over 100 messages in his box ... from all kind of girls ... even the one saying "Single mom looking for a role model for my children."His conclusion was :"Girls on POF are all idiots." ... which is a bit harsh.
... I don't agree with this conclusion, but it kind of look that way at a first glance.
The second video, was a guy that was in the same boat ... so he decided to verify something ... He created a new profile and put a picture of a normal girl ... just a regular one .. not a top model. Then he put a short description, no big details and saved it ... His mailbox immediately started to fill up with messages ... like ... one or two messages per minute. His conclusion was "Girls are flooded with messages and there is no way they can read them all. So unless you are amazing looking, they wont even bother reading."
I don't think girls are idiots, but I think if they are on POF, there is a reason ... And guys .. well .. they just jump on them like if they are a piece of meat ... which doesn't help.
So yes ... There is nothing wrong with you. I'll never go back to a dating site. It is just a very bad way to meet a larger number of girls unless you are gifted. And since you need to meet a large number of people in order to find a good match, a dating site is very inefficient.
And since I'm really bad when I'm in group, it makes things very difficult for me.
... but at least I'm not losing my self confidence because of a dating site.
... you better just go to large events like conventions about topic you like and make tons of social efforts. At least you get to meet tons of people with similar interest. The first times you may not talk to a lot of people, you'll be exhausted and you might go home after a weekend with a cold because of all those nasty convention germs. But after few tries, you'd realize that you met more people during those 3 weekends than in you entire life.
That's my opinion.
ps: I should follow my own advice instead of role playing on Second Life like a nerd.