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I'm not sure exactly why, but google started "suggesting" me after I participated heavily in yahoo answers.  No other SEO practices were attempted.

Perhaps its the wide range of IP addresses typing in your brand.

Update:

For some reason this just popped in my head, but my search suggest seems to be equal if not stronger with Yahoo and Bing even though I've had less than 5 queries+Click throughs of my brand in the past year on either of them

Thanks for sharing that charles!

Although I just checked it out and this phrase "is kevjumba a heterosexual bear wrestler" seemed to have went viral, appearing on titles of tons of different domains.