A Short, Easy to Remember Address

If you've decided to go with a free website host and don't want to own a domain, these might be just what you're looking for. They have shorter addresses than most other free hosts, usually in the form of http://you.them.com.

Bravenet Hosting
They offer free subdomain hosting with 20MB storage and FTP access. Banners added, no popups.

1FreeHost.net
They offer free subdomain or domain hosting with 120MB space, 2 Gigs bandwidth per month, cPanel 10, Fantastico, PHP & MYSQL, CGI, Frontpage extensions. They do add a forced banner advertisement to your pages, to remove that hosting costs $2 / month.

3000mb Free Subdomain Hosting
Their sign-up page is a bit confusing, so this link will send you directly to the actual place to join. They offer 3 Gb (3000 MB) transfer per month, 3 Gb (3000 MB) storage, PHP/MySql support, a pagebuilder / HTML editor as well as FTP access and file manager so no matter how you prefer to edit your website, they have you covered. Your url would look like: you.3000mb.com, nice and short!
Forced Ads: "a small collapsible text banner on your page"

NetFreeHost
Their free subdomain (your url would look like http://example.bizhat.com) has 50 MB web space and 5 GB monthly transfer limit. They offer a few extras like a hosted message board, counter and SSI. Uploads are by FTP and they also have an IE based file manager.
Forced Ads: No ads, banners or pop-ups added to your pages

Tripod
50 MB of space and extras like a guest book and an answering machine that lets visitors leave private messages to you and advertising seems to be allowed.
Upload: FTP, Browser, online editors.
Forced Ads: Pop-up