First, it's likely these sites are using young looking girls that are in actuality 18 or 19 year old college students. They want to create an illusion for you, and make you believe this is real. I would find it highly suspicious if these are websites that have underage girls on webcams. Highly suspicious.
Second, if you're visiting these sites, then I have to question your common sense. With the amount of law enforcement agents and vigilantes that are looking to trap "pedophiles" with sites just like this, you should carefully reconsider what you are doing.
I understand you may be lonely and frustrated and simply want to admire young teenage girls, but this is not the way to go about it. It's not safe, nor it is even likely to be real. You could end up in real trouble getting involved with this kind of thing.
I'd also like to point out that if you were to name or link to one of these "webcam" sites, it would be deleted immediately and you would be banned for doing so. You do not post often (last time was in 2005!), so you may not fully understand how strict we have to be. Our main priority is to protect this forum and it's posters. Sending people to sites like this is a huge "no-no". It's also rather unwise to come here and post about your online activities, especially if they are dubious. It simply gives our enemies more negative "evidence" about us.
In the future, I'd recommend that you send this kind of message to the GC mods before you post it, and ask if this is appropriate for the board. It's not, and we would have told you so. I won't delete your post, but another moderator may feel differently and get rid of this thread. I would support that decision. But for now, I felt a warning was the best course of action here.
Be careful out there and try to avoid sites of that nature, especially if real underage girls are involved.