Actually *is* a review!
Links to a review on my site or my blog!
It seems to me that the blue flagging system adds no value whatsoever to LibraryThing; the fact that you aren't told when your review has been flagged and that there is no apparent way of unflagging incorrectly flagged reviews makes it even worse. It should simply be scrapped.
Edited to add: Well, you can now undo a blue flag, which is better than nothing!