User blog comment:Jamdog/Adding time and date inside your custom wiki signature/@comment-1091639-20111020122956

I'd like to point out that this signature will be properly displayed only when the appropriate template page is present on the wiki where the signature is left. This leads to trouble when a user is leaving a message on a wiki where he/she didn't create their sig page, rendering plain text which looks bad. this thread shows the mess this method of signing causes.

At some point, too many users took bad advice and started to use signatures like that, instead of creating only one sig page here on Community Central, which can be transcluded on any wiki.