A short and anonymous name, with no wierd "what does that stand for" connotations. Great for infrastructure like dns, analytics, email aliases, etc.

Yes, it could be for sale if you made a meaningful offer.

CIRA's contact a domain owner form

This domain is owned by Tom Brown who has been working full time in the webhosting and domain registration world since '97. He is the chief tech (and president and bottle washer) at BareMetal.ca.