[edw519]

http://wufoo.com/

http://www.weebly.com/

http://geticeberg.com/

http://wordpress.com/

All sites that let the user build something of his own. I've always been fascinated by this approach.

All very clever and very cool.

(Now all we need is a site that lets the user build a site that lets his user build a something of his own.)

[helveticaman]

I think that can be done with heroku.

http://heroku.com

[markm]

Seconded, I love wufoos design. I needed to set up a simple form for http://facebookcontest.com/contact.html and wufoo just flowed.