Some of my favorite and most visited sites and vendors.

Nikon USA                                                                     http://www.nikonusa.com/en/index.page

Nikonians                                                                      http://www.nikonians.org/

Nikon Café                                                                    http://www.nikoncafe.com/vforums/index.php

Canon USA                                                             http://usa.canon.com/cusa/consumer/products/cameras 

Information on Canon cameras, lenses, and photographic accessories.

Canon Digital Photography Forums                           http://photography-on-the.net/forum/index.php                     

An international discussion forum about photography, gear and techniques.  While concentrating on Canon equipment, all are welcome to join the discussion and share tips and knowledge.

Fred Miranda Photography Forum                             http://www.fredmiranda.com/                   

Another international discussion forum focusing on photography, gear and techniques.

Think Tank Photo                                                    http://www.thinktankphoto.com/ 

Manufacturer of photography bags and accessories.

B&H Photo and Video                                              http://www.bhphotovideo.com/ 

One of the largest and best photo/video stores in the world.

The Luminous Landscape                                         http://www.luminous-landscape.com/index.shtml

Comprehensive site devoted to the art of landscape and nature photography.

LensRentals.com                                                    http://www.lensrentals.com/ 

Camera and lens rental company featuring an excellent photography blog on the site.