Online identity confusion is always fun. For awhile I used to go onto IRC regularly. Sometimes I would use the nick "GabrielK" during chatting. For some reason everyone thought that Gabriel was the same as Gabrielle and all these guys would start private messaging me to ask what I look like, where I live, etc. After getting an excessive amount of private messages during one session I changed my nick to "GabrielK_is_a_guy" (or something like that). Seemed to do a trick. Anyway to bring it back on topic, maybe you could include a thin banner at the top of your image with the words "I am not RNKarenER" in big bold letters. Or maybe just put those words in your image description. As a last resort it may help with the confusion. :)