lucy24 - 9:20 pm on Mar 1, 2012 (gmt 0)
I've got piwik and it was a nasty surprise to find that robots are getting logged as humans. The original premise was that robots are on & off the page before the js even has time to activate-- but that wasn't taking into account the robots that deliberately read and act on the js. They don't arrive bearing signs that say I, Robot so you can't block them in advance.
Why it should be necessary to tell known quantities like b---- and g---- to stay the ### out of your analytics is a whole nother thread.