How to get started on Sythe?

Well, got scammed for my first time today, fun. I sold some games to a "trusted" user, long story short, i didn't get my money, and i needed the RSGP for turmoil.
Now i have nothing else to sell, and i'm really not looking to dish out $100 or so for it. I thought about MMing or starting a Skilling/Services shop, but nobody would trust me as i have no vouches. I've done business before, but either i use a MM, so i can't really ask for a vouch, or if i don't use it, i'd lose money from being scammed, and STILL not get my vouch.. :L Some of you trusted users, how'd you all get started on here? thanks.