The most popular SLR on Flickr is the Canon Digital Rebel XT.
The most popular point-and-shoot is the Canon PowerShot SD400.
Guess which two cameras I use?
It’s a bit of a surprise to me, because I generally don’t hold with the theory that the best product wins. However, perhaps it’s the case that the product that’s most popular with the kind of enthusiasts that post to Flickr, is the best.