We have notice this for quite sometime. Although Google does a pretty good job in filtering out many spam bots – We have consistently founds it reports to be highly un-accurate!

This is no different for their adSense bot – who’s is constantly claiming that people are cheating and has been the reason for many to have their money taken away and accounts canceled.

I would only recommend using Google Analytics in the same way we use it – as a presentation tool for new customers – I finds its data of little use for anything else.