We were talking about it in my 6th period and I heard some very valid points.
1. Your posts may be anonymous, but it's pretty simple to find out who posted something. I don't know if this'd happen in real life, but maybe if someone committed suicide and they blamed a post on Gaggle, the government could easily track down who posted it.
2. Posting nude pics of someone under 18 is child pornography. By all means, enjoy whatever you like in your room alone, or maybe in a room with your friend, or maybe with all your friends at a sleepover, or maybe even with all your friends and then some at an orgy, but don't post it somewhere for the entire school to see.
3. I forgot the rest of the points
So yeah, now I sound like some old lady preaching to her grand kids about whatever old people preach about, in this case not posting mean stuff and porn on the internet. Did I mention that? When you post stuff on the internet in general, you can easily be tracked.
Anyways, I don't really have anything else to say except for a PSA for people that want to send nude pics.
Don't put your face in it.