I live with someone who also uses this website, we have the same IP address.
He's not as active as me but I was curious as to whether being on the same IP as someone else may cause problems? If I mark an answer of his up for example will I be flagged as marking "my own answers" up? I don't know his user name so I might be doing this already (only realized he was on here yesterday whilst walking past his desk lol)
