Regiments of Saint-Omer Blog - M. Toulotte's excellent and continually updated site, which details the history of the 8e RI during the Great War; also covers its sister territorial and reserve regiments - the 7e RIT and 208e RI http://saintomer8ri.canalblog.com/archives/1___bienvenue__/index.html
[French] - [English]

The Nice Collection - suppliers of high quality restorations and reproductions of French military equipment
http://www.nicecollection.fr

The 151ème Régiment d'Infanterie de Ligne - US-based living history organisation dedicated to the remembrance of the Great War (1914-1918), portray soldiers of the 151e RI. An excellent site containing a wealth of information and images about the Poilu of the Great War.
http://151ril.com

Pages 14-18 (French) - an excellent Great War forum, with a focus on the French involvement. http://pages14-18.mesdiscussions.net

Great War Poilu Yahoo! Group - A group for those who reenact the French Army of the Great War http://groups.yahoo.com/group/greatwarpoilu

Reenactor.net - provides extensive listings of worldwide living history groups and information on the hobby
http://www.reenactor.net

Clash of Steel - a website devoted to Military History, including an on-line database of military engagements and images from wars throughout history
http://www.clash-of-steel.org