tedster - 6:13 pm on Feb 4, 2007 (gmt 0) [edited by: tedster at 8:07 pm (utc) on Feb. 4, 2007]
I doubt that it's a spidering thing - because, for some people the same url will rank well for a different url. This keyword-specific behavior and the drastic nature of going to the end of the results are two of the most characteristic signs. The drastic quality makes me feel this might be some kind of "message" -- but what on earth is it saying, especially when some sites report that some of their urls go in and out of the "penalty".
[edited by: tedster at 8:07 pm (utc) on Feb. 4, 2007]