http://www.facebook.com/, https://twitter.com/, http://www.myspace.com/, and of course http://www.linkedin.com/
From there, one only needs to transpose their coin knowledge and experiences to the even more specialized coin-collecting assemblies of social interaction. This is accomplished by participating in the on-line forums created to further expand the envelope of numismatic understanding and collaboration. Here are just a few of the most popular forums for coin collectors.
CoinTalk – an online forum for coin collectors to discuss all aspects of coin collecting. The community is made up of thousands of numismatists who love to answer questions about coins and discuss current coin news. http://www.cointalk.com/content/
Collectors’ Society – this is an online forum devoted to coin collectors as well as paper currency and comic book collectors. Collectors’ Society is composed of tens of thousands of hobbyists devoted to their favorite pastimes. http://www.collectors-society.com/
Coin Community – a place to discuss all types of aspects of coin collecting, numismatics, and your favorite coin topics. http://www.coincommunity.com/forum/
My Coin Collecting – this site brings coin collectors together with active message boards dedicated to all types of coin collecting topics. http://www.mycoincollecting.com/
Coin Network – the social network for coin collectors. It includes member pages, photos, forum, and blogs. http://www.coinnetwork.com
CoinFriends.com – this site is defined as social networking for coin collectors, where coin discussions, uploaded images and other collectors meet, set up their own or join collecting groups, or participate in exchange programs. http://www.coinfriends.com/
Monetastic Community – this is a worldwide community for world coin and banknote collectors and swappers. http://monetastic.ning.com
U.S. Coin Collecting – this family-oriented numismatic community is dedicated to the collector, and covering all aspects of numismatics. http://uscoin.ning.com/