Hello there!

Beside the forum, that is really a lovely place to stay, I was wondering who is using also photography related social network to show own photo works and eventually to promote a owned website.

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

Beside the well know Welcome to Flickr - Photo Sharing that I already tried without satisfaction, I just find out the following:

Image hosting, free photo sharing & video sharing at Photobucket
Photo Community - MyShutterspace
The Photography Network - PictureSocial
Photography Social Network
Photo Sharing. Your Photos Look Better Here. | SmugMug

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