I wanted to sell some bitcoins for pound sterling and was contacted by ricardotemporal who wanted to buy.
He posted a link to his localbitcoins account:
https://localbitcoins.com/accounts/profile/ricardotemporal/ a heavily used and trusted account.
On his localbitcoin account he has a facebook link, so I asked him to message me from this facebook account, which he couldn't. So I posted on the wall of the account to confirm that he was who he said he was, but I got a reply back saying that he had not offered me any deals.
Watch out for this guy. Fortunately he is a junior member, but his trust is 0, so someone could easily fall for it.