im talking about storing information. to be sure that someone is real, collect tons of info and then get rid of most of it and tag their account with a validation stamp. store just enough info so that two people having identical sets of that info is almost impossible. and im not saying ssn or any other peice of info is the best solution -- obviously it would be anything and everything tailored for whatever systems the persons country of residence currently maintains. as for exploitation, i think it would be simple to make exploitation rare as long as good id systems are implemented by the government or other entities. it would certainly be better than having an internet where its impossible to verify if someone is a human or a robot...