It's not just the WB500. This is a characteristic of small sensors with high resolutions. Normally, you might just shrug it off. But, if you compare this camera's pictures with those of the TZ6, you're likely to see a difference in the finer details.
The Samsung WB500 is pretty good in many ways. The picture quality is pretty good, despite the comments above. The specs are pretty good, the handling and controls are pretty good and it's certainly pretty good value for money. But 'pretty good' is about as exciting as it gets.
Edited by Charles Kloet