scottsonline - 2:21 pm on Feb 2, 2012 (gmt 0)
First symptom is conversions dropping to near zero but traffic remains the same. It is true zombie traffic google has lost track of who is searching to buy vs who is researching. I'm seeing it in all my personal searches too.
If I type in a specific model or part I get one or two valid results mixed with 8 that are unrelated. Issue seems to be a failure to identify their searcher.