So that's why Hanzo:web has been down...
Spam: A tragedy of the commons. Looks like they are not the only web archiving site to be plagued by spam; Spurl.net has had this notice posted on their website for months which apologizes for offering "reduced functionality due to heavy spam attacks":
I received an email from Mark Middleton this morning informing me that Hanzo:web's free archiving service has been discontinued. There's really no other free web archiving service to take Hanzo:web's place- WebCite is mainly for academic citations, Furl and Spurl only archive since HTML pages and don't make archived materials publicly available, and Archive-It charges a subscription fee.