I've recently discovered that MSN censors IMs with some urls. From reports, it seems that the censor rules are really random too: e.g. everything with the .io t

I've recently discovered that MSN censors IMs with some urls. From reports, it seems that the censor rules are really random too: e.g. everything with the .io tld. It also gave zero feedback that it was doing this, other than "error sending message". That is not acceptable. If you think there is a virus in a URL, attach a warning as web browsers do with domains that have had reports of distributing malware. And beyond that, actually make sure that you only do this for sites that are really a danger, rather than making up arbitrary rules with exceedingly low precision.