I've been using Flickr for a while, mostly as a browser but more recently as a contributer. I find it about as effortless as humanely possible for getting your pictures up online.
The grouping function seems to work quite well, where communities of people with similar photographic tastes come together and pool whatever pictures they want. The picture above is of Traigh Rosamol on South Uist. It's from the pool of the Outer Hebrides group, which has an excellent collection of beach, mountain, island and sea shots.