Google click tracking?

not just on some URLs on all

[coco]

Just noticed on all Google results

[google.com...]

I know they used to track a small random sample but not every URL in the SERP.

Here to stay?

[jeremy goodrich]

They do it on random basis, to get an idea of user behavior. So far, they always go back to 'straight links'.

[plasma]

Here (www.google.de) too, startet a few minutes ago ;)