Welcome to WebmasterWorld Guest from 188.8.131.52
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It is certainly not common, a search at Google [google.com] only finds a few results.
>I am starting to get paranoid
Yep a UA of "trufflepig firstname.lastname@example.org" did that to me too. If it makes you feel better nothing bad happened after it visited "my" site.
Be very careful what you show this IP compared to what you show scooter....
When this IP started showing up mid last year, that's when all the trouble with "banned" domains started popping up.