No, I’m not posting a link to facebook or flickr… 
Seriously: although I spent most of my time surfing on other peoples’ blogs, there are a couple of photo communities out there that are (more than) worth a look. For me that means that I find the photos inspiring and/or because of the general atmosphere and friendliness, if it’s a photo-forum. You might realise that the big players are actually missing – which is not supposed to imply that they are not worth a look, but I guess you know where to find them anyway.
Photo collections / Photo sharing sites
500px.com
1x.com
Sites that include photo forums
The Mindful Eye (former Radiant Vista)
Naturescapes
Nature Photographers Online Magazine