The renowned Blitz Wargame club which has a strong community and one of the longest running wargame Websites on the Internet now has a facebook page (http://www.facebook.com/TheBlitz.org). The Blitz is the place to be if your looking for PBEM games for many well known wargames. They have a fair number of leagues all run in a relaxed and friendly manner. Many Vets are willing to teach newbies aswell.