I downloaded it and yes, it is a a nice way to get Disney updates on the parks, shopping, and upcoming DVDs. I had sporadic problems connecting to it from the desktop icon but most of the time the updates are working.
Since I have it set to open when I boot up, it remains open in the background with an "D" icon in the desktop tray. The Weather page has the weather for WDW and DLR and also places like Radiator Springs and Neverland.
I noticed it will chime in with a popup message when it has an update. Cute.
The updates are informative and they link to the website so that is a plus.
Truthfully speaking for real vacation planning tips, Intercot
boards are just as informative if not better !