Thread:Gabriel Auditore/@comment-27202257-20130323012841/@comment-4564231-20130323150403

Most wikis do it the other way round, since IPs change (very frequently). While a registered user is directly identified as the person who committed the offence, this does not apply to IPs. It could easily turn out that the offender got a different IP and the IP that's been blocked ended up with someone who's never done anything here. Trust me on this one; it's happened numerous times before.

Here's TESWiki's policy on IPs and their general block length policy as an example.