Not sure if everyone realizes it or not, but they have actually had this service for a while. When I read Tom's question I decided to go and set up an account to give you guys a brief review, once I got to the login screen I realized I had been there before. Anyways, here is what I found while setting up the account (new account!):
*You can import email from Yahoo, Google, MSN Hotmail & MSN Mail
*I chose to use my hotmail account, don't want to mess up my Gmail.
*You can choose to import contacts & email, from the same screen you can choose to tell people about Goowy, if you do, it will send an email to all of your contacts letting them know about it.
*I chose to skip the importing of email contacts because for some reason I could not get logged into my Hotmail or Yahoo accounts.
*Once I got to the login screen, I actually remembered I already had an account with them before, but has been such a long time since I have used it.
*Functions much like a normal desktkop would, you can play games, change your skin. Add widgets, etc.
For me personally, I would rather use CosmoPod.com's service. Its not that big of a deal for me to head over to Gmail to get my email and with CosmoPod.com you have word processing, instant messaging, gaming and anything else you would find on a normal Linux desktop.
In my opinion, its just a fancy way of retrieving your email.