On August 4th, the International Red Cross posted their WWI POW records online. You can find their site at this link:
http://grandeguerre.icrc.org/en/File/SearchYou can search by surname and then indicate the nationality of the individual followed by indicating which country in which they were held as a POW. The records are extensive but I was unable to find some of my relatives who I knew were POWs. If any of you find one of your relatives, I would appreciate it if you would contact me with that information.
Carl