CoinTalk Site that provides discussion coin collecting forum and live chat for coin collectors and dealers. Serious numismatists and novices alike are welcome.
CoinForums.com A place for numismatics to gather to discuss coins, currency, and postal orders.
Collectors Society A section of a site of a general collectibles society with coin collecting forums and discussion boards.
Coin World Section of a numismatic site with a coin collecting forum for coin collectors to discuss general questions about coins, with a section on US state quarters in particular. Register to access the forum.