CAPTCHA a Gimpier Clive

So I was registering with the Eggcorn Forum so I could tell everyone there about Dina's brown flakes when I was given this great CAPTCHA:



Just who is the mysterious 'gimpier Clive' (or rather, 'gimpier CLIVE'), and who is he gimpier than?

According to Wikipedia, one of Yahoo's early CAPTCHA programs was called EZ-Gimpy. I'd really like to know the connection between gimpiness and CAPTCHA...