I've had a GeoCities Free account since 1997.

You cannot download your files with FTP - here is the best way to download them (one at a time) on a Windows computer:

1) Go to GeoCities Filemanager and right click on the file
2) Press the "k" key to open the download dialogue
3) Press the "enter" key to save (you may need to press it more than once)

I backed up all my files, about 15MB in about 2 hours.

BTW, I can offer cheaper hosting than Yahoo - beginning at $4/mo - http://netsperience-web-hosting.com