The site mentioned in OP is definitely not to be trusted. I'd much prefer reputable Bitcointalk escrow (listed here) than any website claiming as escrow. You can get a better picture of why those guys become recommended escrow here. They have become a member here for years, escrowing thousand of BTC, some of them are not totally anonymous, and there's one (OgNasty) that has been escrowing the forum's treasury worth of 500 BTC for several years.