Originally Posted by Cygnus

A form to fill out asking if you were banned
http://add.yahoo.com/fast/help/us/ysearch/cgi_urlstatus

A form to fill out explaining why your site no longer deserves to be banned (based on the vague "yeah, we penalized you but are too busy doing other things to care" e-mail)
http://add.yahoo.com/fast/help/us/ysearch/cgi_rereview