Sure you don't see how harm it would be. But the problem is R I S K. There are bound to have kids out there who likes to look for trouble, fabricate the story. What if 17 yrs old you just talked with walked to the police and told him that your trying to do something illegal like cybersex, or selling dope. There is evidence that conversation exist, thus can lead to police believe into this 17 yrs old kid more than you. Happened? Sure it had! So, do you want take that chance? It is totally up to you, but I wouldn't take chance, sorry!
Internet is still Wild Wild Web and there are too much illegal activities out there.
I was falsely accused few times in the past and it is NOT funny defending myself. Im sorry, my experience gives me this perspective. Once you experienced you think totally different.