TheMadScientist - 5:19 pm on Mar 20, 2011 (gmt 0)
... our algorithms rarely have a "one-track-mind," they take many factors into account.
I wonder if one of those 'tracks' is 'are you a webmaster making one small change at a time so you can more easily manipulate our results in the future?' ... I think if I had any say in the matter it would be, say if there was a pattern of behavior suggestive of SEO rather than VISO [visitor optimization] I might be inclined to decrease rankings for a period of time, likely until the pattern of behavior subsided.