Addendum to caleb72's adivce: this forum has a limit to who can have signatures. I think something like "at least 10 posts and/or one week since the account was created", something thereabouts. So taking part in a few discussions might be a good idea.
But even before that you can enter other contact info, most importantly your own website, and also your Twitter username in your profile, so that at least people who want to look for it can find it. (It's under "User CP" - "Edit your Details").
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