this guy is legit and also he has been using the addy 18gEM6Mjk9QmXs6GyvSFbNmfncPJr2Zq69 for all of his loans.
+1. This guy has repaid all his loans in the past. He has a positive 6 trust. The highest loan in the past (that I could find in 1 min of searching) was 0.7btc, so this isn't a large jump.
Disclaimer: Nothing forces him to repay the loans in the future. I always wonder why he keeps asking for loans when he could just buy the bitcoin himself and save/pocket the interest charge. When you add up all his loans, he has paid a LOT in interest.
It's all about reputation - it's worth more than gold, sliver, brass, copper, and BTCs combined. Dah!