Pros: Cheap. Easy to connect. Supplied software ignored in favor of downloading from the Logitech site.
Cons: Lousy tri-footed mount which is hard to adjust.

Just installed the Quick Cam Messenger using the current, downloaded software @........
http://www.logitech.com/index.cfm/downloads/software/US/EN,CRID=1794,contentid=6361
It works great. No color distortion, reasonably easy to focus.
The supplied mount is a bit difficult to adjust, but for the price I paid on eBay ($14.00) it is fantastic.
I can't understand why there are so many negative reviews!
Still pictures reasonable quality but if you own a digital camera why bother with this feature.
Haven't tried the movie feature....... probably never will.