Popfly is the fun, easy way to build and share mashups, gadgets, Web pages, and applications. Popfly consists of two parts:
1 Popfly Creator is a set of online visual tools for building Web pages and mashups.
2 Popfly Space is an online community of creators where you can host, share, rate, comment and even remix creations from other Popfly users.
For more details check out here.
I have signed up and I am waiting for confirmation. I just cant seem to wait to play with it.