My $.02 -
I handle quite a bit of PPC of clients using google adwords. There has been quite a bit of buzz about what policies to include to be compliant and I just extrapolated that if it's a requirement for Google when it comes to advertising it's not a bad thing to have on your site for other purposes.
http://www.seerinteractive.com/blog/adwords-gets-serious-abo...
I always configure a:
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