I have a couple of questions for the forums - not the game.

1. What is "reputation" points?
2. What's is a "dev"?
3. Is there any way to post an attachment using the mobile app?
4. Is there any way to edit my profile using the mobile app?
5. Does the green dot thing next to a user's name mean they are online? (correct me if I am wrong)
6. I noticed some users had green bars underneath their username, so what is that?
7. Under my username it says Member. On others it says different things, what is that supposed to be?

That's all my questions that I was VERY confused on. If you do answer any, please put the # of the question you answered. Thanks!