Ok here is the scoop at the moment...
Some weird bug allowed me to accidentally overwrite the ABRV field in the Spycraft RPG record. When I tried to change it back to its original value I somehow got it merged with the Spycraft GM Screen entry. Long story short, I wiped out the mangled entry and re-entered both products. As you can see, the Spycraft RPG reviews have vanished. Ick!
Good news is that Liquide has a backup from a couple of months ago, and so will likely be able to restore those reviews of the Spycraft RPG that were written prior to that date. Any reviews written on the Spycraft RPG after that time would have to be re-entered (if the reviewer has saved his or her work, or cares to write a new review).
I'm really sorry about that, folks -- I'm usually a lot more careful than that.