I know a lot of authors (myself sometimes included) who say you shouldn't believe your good reviews anymore than you do the bad ones, but I have to decide to disagree.
Bad reviews are written by people who are never going to be your audience. Good reviews are written by YOUR PEOPLE. The ones you WANT to find, and hold on to. Because those are the readers you'll be keeping throughout your career.
Generally, I agree. Offhand, I can think of not even one example of a reviewer changing herhisit's mind about my work, with the caveat that a small number of them are less happy with the "dark fantasy" approach of my recent work, as compared with the more "Lovecraftian horror" of my earlier work. Too often it seems that a reader decides how they feel (often before reading the book), and the opinion becomes an immutable thing. Which is unfortunate, as, in my opinion, I've become a far better author (and a rather different one) than I was when Silk was first published in 1998.
Oh, and I should probably repost the eBay bit, for those who haven't seen it:
We have now begun the latest round of eBay auctions. Copy X of the previously unavailable lettered-edition of Tales from the Woeful Platypus has already been listed (which comes with my first beanie paisley platypus), along with a copy of the trade hardback of Frog Toes and Tentacles. Much, much more to be listed over the next couple of days, so do keep your eyes peeled (as they say).