Here is a list of various web forums and information resources dedicated to reptiles. If you would like to see other sites added here, please contact me.
Morelia Viridis Forums – the largest discussion forum dedicated to green tree pythons
iHerp – social media and software for reptile keepers
Kingsnake – reptile classifieds and forums
Fauna Classifieds – reptile classifieds, forums, and the famous Board of Inquiry (BOI)
Reptile Radio Forums – just like the title says
Herp Nation – everything reptiles
USARK – US Association of Reptile Keepers (the politics of reptiles)
Ball Python Forum – just like the title says
Reptile Vet List – there are several lists available on the web, but this one seems to be the most up-to-date.