My first web application built using Seam is now live. It is called 10MinuteMail and you can see it at www.10MinuteMail.com.
It gives you a temporary e-mail address, and lets you receive and reply to e-mail sent to that address. The e-mail address expires in 10 minutes (or more, you can extend it as you need more time). Basically I created to learn Seam, and to provide an easy way to avoid giving your real e-mail address to websites which require an e-mail from you to sign-up. Think of it as spam avoidance.