You might be interested in this lengthy report on G's invalid click practices. It may not really make you feel a lot better, but it's at least info that I don't think was available at all previously.
http://googleblog.blogspot.com/pdf/Tuzhilin_Report.pdf
On the poll question, there's no entity that has jurisdiction worldwide. And the report above references the "fundamental problem" of PPC advertising:
Quote:
Based on the discussions in Sections 8.1 and 8.2, we conclude that there is a fundamental
problem associated with the definition of invalid clicks for the Pay-per-Click model. This
problem can be summarized as follows:
• There is no conceptual definition of invalid clicks that can be operationalized in
the sense defined above.
• An operational definition cannot be fully disclosed to the general public because
of the concerns that unethical users will take advantage of it, which may lead to a
massive click fraud. However, if it is not disclosed, advertisers cannot verify or
even dispute why they have been charged for certain clicks.
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