#1
Hey folks, I wanted ask if I would be allowed to post a link to my website??
This website gives reviews and publicity to unsigned, up and coming bands.
#2
From what Ive seen it should be okay.

People do.
I just had to post this, didn't I.
#4
Put it in your signature. Two reasons: One, it's included in every message you post for people to think about checking out. Two, you're not directly "advertising" anything, just inviting people through your sig.