That isn't necessarily true. Usually when you make friends on the internet, it is through an activity that you both have in common. (RuneScape in this Tip.It instance I suppose) Sure, it works the same way in real life, but if you live someplace where there are only 20 people that share your hobby as opposed to 200 that you met on a website. The pool is much larger to meet people that you like. I also depends on how social you are among many other things.