I try to avoid reviews for games that haven't been released or aren't in an open beta. I am especially suspicious in regards to embargoes that lift less than 24 hours before the game goes on sale.
Publishing peoples' private info is bad and nobody should be encouraging others to find that info.
On the other hand, info about the games should be published. If a games journalist is willing to tow to company PR lines and withhold valuable info (to players) about games, then they should be willing to cover this. If they aren't, then they're just a fan with special access.