How do you anonymise them?
The now unsupported OptimizeGoogle
addon - whether or not it now actually works due to changes Google may have made in the meantime is another question.
But I don't get any kind of cross-linking between sites connected to Google, (as you see in your pic),
there is only one "ring" of sites feeding back to Google, (as opposed to the possible 3 or more in your pic),
nor do I get ads related to anything I type, (after disabling other addons), since installing it, eg. as Renegade found here
So something somewhere must be doing something
Then again, I'm never logged into Google for anything except maybe once a month to check the spam folder in email, so really I guess the only thing they can go on is my IP.
I might do a little testing in a VM with just OptimizeGoogle and Collusion installed and see what eventuates.Addendum:
I thought I'd do something simpler: do a search, read the cookie ID, delete it, do another search, read the cookie ID again.
Before ID: e3d6010785247c84:FF=0:TM=1336956597:LM=1336956597:S=PEa3IUp2Cw-N-RTt
After ID: d6389bb5e8d134bb:U=7c4d84c4aa943c7f:FF=4:LD=en:NR=100:TM=1336956662:LM=1336956662:S=1ZXOzkMmGGEFmo_U
I've done it a few times and the only item that seems consistent is the TM, (time), entry - the other are always something different. I would think that if they wanted to track me using a cookie then they would have to use a consistent ID string based on my machine configuration, (or Google login - which I don't).
BTW, Data Liberation Front
- something I just read about in APC, (Australian Personal Computer).
This site is a central location for information on how to move your data in and out of Google products.
It's run by Google - so take that how you will