Flickr offers a very useful camera finder tool to help you choose the right digital camera or a camera phone.
With the Flickr Camera tool, you can not only see the quality of shots captured by actual consumers in real-world situations but you may also compare the relative popularity of various camera models over time.
With Picasa (the online version, not the desktop software), you can either search for public photos that have been shot by any particular brand of cameras (say Nokia or Nikon) or you can limit your search to photos that have been taking using a specific camera model (say Nokia N95 or Canon Power Shot A3100IS).
Like Flickr, Picasa Camera Search works with camera phones as well as regular digital cameras. The feature is available under search options in the sidebar.
Related: Interesting Uses of Camera Phones