Feel free to add any more you can think of, here's a start:
General Footy Sites
Footysa
http://www.footysa.com
The inspiration behind this site and has been easily the best SANFL website for news, arguments and meeting other SANFL fans.
Bigfooty
http://www.bigfooty.com
The biggest AFL board on the net
SANFL Official Site
http://www.sanfl.com.
Nothing flash but does the job and is run by the SANFL
South Australian Amateur League
http://www.saafl.asn.au/
Official home of the Amateur League
Legends of the SANFL
http://www.geocities.com/golden_rams_aust/Legends_of_SANFL.html
A great site dediated to the great players of the past of the SANFL.
AFLHQ
http://www.aflhq.com/forums/
The alternate AFL fans board to bigfooty.
Footypedia
http://www.footypedia.com/
Very comprehnsive guide of every club to ever play footy
VFL Footy
http://vflfooty.dyndns.org/
The Vics version of SANFLFooty
FootyGoss
http://www.footygoss.com
WA Based Footy site
SANFL Club Sites
Central District
http://www.cdfc.com.au
Glenelg
http://www.glenelgfc.com.au
North Adelaide
http://www.nafc.com.au
Norwood
http://www.norwoodfc.com.au
Port Adelaide Magpies
http://www.portmagpies.com.au
South Adelaide
http://www.safc.com.au
Sturt
http://www.sturtfc.com.au
West Adelaide
http://www.westies.com.au
Woodville-West Torrens
http://www.wwtfc.com.au
SANFL Club Fan Sites
U-Dogs
http://u-dogs.net/[/b]
Snouts Louts
http://www.snoutslouts.org/
The Roost!
http://www.rocketrooster.com
Redleg Talk
http://www.norwoodredlegs.com
The Power from Port
http://www.thepowerfromport.com
(I included this as it also has a forum for Magpies and SANFL talk)
Panther Talk
http://www.rocketrooster.com/panthers/phpBB2/
The Sturt Football Club Scrapbook/doubleblue.org
http://www.doubleblue.org/
Eagles Fan Site
http://eagles.arecool.net/
Chat Room
http://rocketrooster.com/chat/phpMyChat.php3
Chat Room dedicated to the fans of the SANFL[/url]