I commented in a thread here the other day that SerpBook had 'gone downhill' over the last few weeks. I'm back today to declare that it's now dead. Demised. Ceased to be. It's an ex-rank tracker. I haven't had an accurate rank report from SerpBook for quite a number of days, and now it's simply not updating the rankings for some keywords (ie, doing the manual lookup has for the last 48hrs revealed a totally different rank to that which is reported by SB). Taking a closer look at the alternatives in the next 24hrs, and cancelling my payment subscription to SB.