Today I added links to both Tracy's .Mac Web Gallery and my .Mac Web Gallery. They are very simple to use and look extreamly pretty. Why .Mac, well, Tracy was already using and as it is part of our whole Apple experience; why not? It plays very friendly with all modern web browsers, works with the iPhone and the Apple TV. I still have my Flickr and Smugmug sites and only time will tell if I make the total switch; but for now it is really easy for me to publish from Aperture and it's just as easy for Tracy to publish from iPhoto.
.Mac isn't state of the art or super fancy, but it fits the need. You can download individual photos or entire albums if you like. There is also the option of adding your own photos to the albums if the feature is turned on for that album. I've not played with that feature much yet.