DC2NET Links

Beside the forum, that is really a lovely place to stay, I was wondering who is using also photography related social networks to show own photo works.

I’m interested in real communities not services like host photos and eventually print them out.

Beside the well know http://www.flickr.com/ that I already tried without satisfaction, I just find out the following:

http://photobucket.com/
http://www.myshutterspace.com/
http://www.picturesocial.com/
http://www.photography-network.net/
http://www.smugmug.com/

What do you think of them?
Someone used?
Experiences?

I checked deeply so many websites and finally my decision goes for:

(1) http://500px.com/
(2) http://www.myshutterspace.com/

There is also http://www.picturesocial.com/ but is a perfect clone, a mirror of http://www.myshutterspace.com/ they did not even move or change positions of links and contents locations. Maybe I will consider later.
__________________