I have recently joined www.redbubble.com an awesome website for developing a community of like minded people and as a show case for my work. Red Bubble takes care of all the messy back end stuff that can be very time consuming especially the printing of large format panoramics onto canvas.
They offer a complete service for both me the photographer and to potential customers I have. It looks and kind of feels a lot like Flickr but with all the things you need to manage an online commercial presence. I am very happy with the usability of the Red Bubble interface and feel very confident that my work is secure on their servers.
I'm looking forward to making my first sale via www.redbubble.com
If you want to check out my Profile o Red Bubble follow the link