Since joining Smugmug a little while ago, I have spent a considerable amount of time looking at published photos both on Flickr and Smugmug. I have to say that I am very impressed with the members of Smugmug. Browsing the days popular photos always amazes me with some of the talent that is there. There are some stunning images being published there.
I find that while Flickr has a large number of outstanding photos as well, it is a little more difficult to sort through all of the cell phone pics etc.
Check out both