a. Argument 2 is the one closer to my opinion.

b. It's addressed to teenagers.

c. More often than not they're not real. Although I've stated that argument 2 is closer to my own point of views on the subject, I can't entirely disagree with argument 1, given how darn often we hear about kids/teen being catfished or baited to do some creepy things that pervs ask them to, or just straight up preyed on by said pervs. As for the second question, yes, I do have a couple of great online friends with whom I share a lot of things I wouldn't even dream of sharing with the ones I have in real life.