Super-duper favorite sites:
Gardenweb - The forums provide very helpful advice; registration is free.
Garden Decor at BlossomSwap
Molbaks - Even though this site is for a nursery in Washington state, they offer great care sheets (in .pdf format) for outdoor and indoor plants via the "horticultural information" link.
Virtual Gardener - "an online magazine with organic roots"
The Garden Helper's House Plant Care and Cultivation Guides
heartleaf philodendron (philodendron oxycardium); also known as cordatum vine, parlor ivy, and sweetheart vine
devil's ivy (pothos)
spider plant (chlorophytuni comosum); also known as airplane plant
chinese evergreen (aglaonema)
arrowhead vine (syngonium podophyllum); also known as nepthytis, african evergreen, goosefoot plant
Defenders of Wildlife
National Wildlife Federation
Opossum Society of the United States
Wildlife Conservation Society
National Audubon Society and the Atlanta Audubon Society
Nutty Birdwatcher - good source of info for Eastern U.S. birds
Bubba & Friends - birds of prey rescue organization in Griffin, GA