Links
Photo.net: a general informative site
Luminous Landscape: superb photos, inspiring articles and more
Nature Photographers: a first class e-zine
Great British Landscapes: Excellent e-zine with interactive articles, videos and more
Light & Land : Great workshops, courses and tours run by top photographers
Nature Explorer : Adventurous photo tours in Iceland - fun and great photos opportunities guaranteed!

Some photographers whose work I especially enjoy
Julian Barkway
Niall Benvie
Daniel Bergmann
Anna Booth
Baxter Bradford
Richard Childs
Joe Cornish
Mel Foster
Nigel Halliwell
Jonathan Horrocks
Tim Parkin
Charlie Waite
David Ward

and finally some more from me at ephotozine

Photography Sites.Com