Ftp

cuteftp of course

www.ftpforest.co.nr

is a site which sells ftp slots :)

lots of sites on there 0-sec, 0day

Eh, even if you stumbled upon some l33t username and password, axx accounts are restricted to work from certain IPs.

If you ask on a public forum for FTP, you're going to get some shit public FTP. Keep that in mind.