You all know what reverse IP lookup is: trying to determine which websites reside on the same web server, whether it be a shared hosting server where the sites are unrelated or a dedicated host. The TagTooga.com site now has "Reverse Google ID Lookup" -- the ability to find sites using the same AdSense Google ID.
When a site is detected to use Google ID's, the listing in TagTooga.com will include a
icon. If you click on it you will see the Google ID and the other URLs having the same Google ID. Here is a snapshot of an example from
software/charting analysis:
The image shown here is the admin's view, which includes options for banning a domain or Google ID from the TagTooga.com site. Normal user's don't have banning ability.
PS> Using the same Google ID on multiple sites does not imply wrongdoing -- but you might uncover something a less-than-reputable site owner didn't want you to know...