Is a screensaver really required on a BB? Mine is only a few weeks old and I take good care of it and don't want to damage the screen. Does it impair the screen view.

Also, of the ones on the market, what are my options. I am also interested in ease of installation and the ability to remove and replace. What are the sources?

no you dont have to put one on. And they arent what you think of when you thing of a pc they are just images. You can send all the pictures you want to the 7520 and use them as the standby screen