Clicking the PayPal link will reveal that the ransom money goes to firstname.lastname@example.org, i.e. the John Cow fellow himself.
Scratch that, I think it’s silly. $100 to release the site? That’s undermining your own value to me, and that hurts your brand. Might be a fun way to try and earn some extra money, from a blog I guess, but I’d reckon asking for donations would work better.