If you want free and professional why not just use a combination of Facebook, Tumblr, and Flickr, etc. ?
Complain as you will, but they still have better user-interfaces and load times than 98% of the "professional" websites and you'll probably get more traffic and interest. It would cost you $100K to develop the Flickr interface independently and it works better than an expensive pro solution like LiveBooks or most professional photographer's online galleries.
You can always do what this kid did:
http://www.zachklein.com and have a home page simply link to your network.
....
Bookmarks