If you want to drum up interest in your new product or site, but don't have the site viewer-ready yet, you need Launch Effect.
It's a WordPress theme that allows site visitors to sign up for the announcement when you're ready to launch.
Recently, they've created an app for AWeber that allows you to add those sign-ups straight to a subscriber list. When all systems are go, all you have to do is send your list the message!
Check it out