Well, logging IP adresses wouldnt help much. Double voters can easily log on with another username from work, from a friend etc, and get a different IP. Humorix already suggested the best way of dealing with trolls. But i understand Cambert as well. Setting up a gallery takes some time, especially if one has work, family, kids etc. However, i still think that a validation is necessary.

Rudolf Herczog
Digital Artist
www.rochr.com