I know this may sound strange, but I as with a serious note. A friend was particpating in a photo Contest, and was doing very well, the person who was running the contest, decided that my friend was cheating by using alts to vote for him, myself my wife(sl and rl) and son (rl) where named as a alt. In my household there are 3 different people who play SL and we all use the same internet connection. I also know of other homes where more than 1 person is on SL. A few of our friends do know that we are different people. I wonder how many homes have multiple players. I have heard of inworld software that can be used to detect "Alt's" but that is flawed my case proves