Mind you that since some time ago it seems this "feature" is not reliable anymore.
The are msn clients that had this functionality built-in and things have gone south when it started to malfunction and reporting some users as being blocked or deleted when in fact they are not. As far as I know no one knows for sure what the problem was (maybe just a change in protocol or a deliberate change). I have tested it myself with several different accounts and it was similar to a russian roulette, this "feature" was not reliable anymore in identifying when one has been blocked/deleted. Search more about this in mercury's forums, at least the problem came up there and also on amsn's forums if I remember correctly. -- Mauro Santos
