Can I point you all in the direction of the pinned topic in the section above regarding members signatures.
http://forum.piriform.com/index.php?showtopic=20817
As stated in that topic, this will initially be left to members to rectify themselves, and this topic is simply a "for info" for the folk who haven't noticed the one above.
There isn't much evidence of changes being made yet, so I'm pretty sure there are members who haven't noticed it.
Thanks in advance for your cooperation.