OTHER PEOPLE'S STUFF
Most of the time when people send things to you, they're okay with you sharing them with other people. If you don't know for sure, think twice before doing this. Even better, ask the person who sent it if they mind if you share. The same is true if you're sharing photos or videos that have other people in them: ask before you tag, re-post or pass them on.
If someone shares something with you with somebody else in it, ask yourself:
Did the person who sent this to me mean for it to be shared? Did they have permission from the person who's in it? How would I feel if somebody shared something like this with me in it?
If what you received makes that person look bad, would embarrass them, or could hurt them if it got around, don't pass it on. The person who sent it to you may have meant it as a joke, but jokes can be a lot less funny when something is seen by the wrong person.
A lot of people get pressured by their friends to share nude photos of their girlfriends or boyfriends. It can be hard to stand up to this pressure, but you have to think about how much giving in could hurt you and your girlfriend/boyfriend.
