OP, if you want to vouch then look for a trusted person. Someone that have a green trust or at least someone high rank without a red trust at least unlike the person trying to ask your vouch.
You have to remember that buyers won't probably trust you because you are a newbee. Vouching someone with a negative/red trust cannot help but can only destroy your market and reputation.
Not spam post....FUCK
https://bitcointalk.org/index.php?action=profile;threads;u=293736;sa=showPosts
https://bitcointalksearch.org/user/davewave-293736
Only accept Escrow or you go first.
Escrow: https://bitcointalksearch.org/user/tecshare-15728