How accurate is serpbook?

Pretty accurate, I've been using it for a year and half or so now
I used both of serpbook and serpfox, and i can say that they are both very accurate, i'm using Serpfox mainly to track most of my keywords for over a year now!
I use both serpbook and serpfox - they are both pretty accurate and have Geo targeting options.
For me Serpbook, is dead on the money accurate. Been using it for awhile now and I truly love it. Very easy to use, and a great value for what you get.
The graphing is damn nice as well, and it creates nice pdf reports for your clients which I really like.
I use serpbook, seems like it has a few bugs though, but I love it anyway:)
I have used Serpbook and Serpfox. I'm happy with Serpbook, it is not 100% correct, but I can live with that.
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