That's right, a made up username is not good enough to post comments on AirNav. All comments on AirNav have to abide by our
policy on comments, and you check the box agreeing to it when you submit a comment for publication on AirNav. Rule #7 says:
Comment authors must provide their true identity when obtaining their AirNav user ID that is required to post comments, and must use their own AirNav user ID when submitting the comments. Any attempts to conceal or deceive identity, contact information or affiliation, or to impersonate others, may result in cancellation of comments, termination of account, and possibly other actions.