Amazon Removing Reviews
Personally, I think that part's a good thing. But it might be that your legitimate reviews (from customers on your books or reviews you left) are being deleted too.
Here's a good letter that Konrath sent to Amazon about it:
A Newbie's Guide to Publishing: Amazon Removes Reviews
I looked at the TOS they linked to and it says you have to have bought it from Amazon. I wonder if they'll go backwards and delete any reviews you left if you bought elsewhere?
I didn't see more clarification about how they're deciding what to delete, though - because he says you can leave a 1 star review if you never even bought the product, but their TOS say differently.
Tiff
Ellie Manwiller
Unbridled Traveler
"With enchanted eyes we watch as these sweet moments turn to memories."