This site is one my favourite site, I visit 500px very frequently. Even if you don't take and upload photos here, sign up for just browsing photos taken by world's most talented photographers. Absolutely fantastic. iPad owners may also install iPad version of 500px.
This site has been prepared by Bob Atkins, and it's only for Canon users. I like this kind of Canon/Nikon specialized sites. This site contains Canon SLR camera and Canon compatible lens reviews, news & rumors.
B&H is one of the most convenient, reliable online shops for photography equipment in the world. They have almost everything about photography. I have visited their retail store in NY, and it's heaven for photography lovers. Go there in you plan to go to NY. Recommended.