What's the meaning of this!!!

[Bill]

I've seen it before. It seems to come and go. It's been happening at times for what, about a year and a half now?

I've heard it described as part of a measuring system used to track clicking patterns and visiting patterns, based on one of googles earlier patents, that calculates ranking in the list based on surfer stickiness to the sites listed. But, that's just one theory.

But, I don't really spend a lot of time studying such things, because there isn't anything you can do about it, and I think it's more effective to concentrate on the things you can influence.

There have been a few wilder theories, related to eventually selling organic results, but again, what could you do about that if it were true?

Linkster or DD probably knows better what the 'official' explanation for it is, they are better at that kind of detail than I. As far as I'm concerned, you can't do anything about it, so why worry about it?