Picky eater or picky on anything you name it goes well with it. It is a rare occurrence you find a domain name with a meaningful single word almost in any extension. This .biz TLD with easy to remember-able word 'picky' is a premium and ideal domain name for all sorts of niches and businesses, it's up to your imagination.
Great news! Domain Picky.biz has been registered in the past and previous domain owner(s) may have forgot to renew or dropped it.