[slxh]

For most people nowadays, "the cloud" probably doesn't have anything to do with accessing an FTP server... specifically not a public FTP server unless the cloud hosts are absolutely careless...

I remember using sites like http://ftpsearch.ntnu.no probably 15 years ago to find very interesting files on public FTP servers (but I don't think that this one exists anymore)

[userbinator]

These still work, and have been around for a long time as well:

http://www.filesearching.com/

http://www.mmnt.ru/int/

(I don't know whether it's coincidence that they're both of Russian origin.)