Is this in effect now since it's been open for discussion for over a week as per the opening post?

i'd personally love to see the:
Signatures

* Signatures should only be in small or normal fonts (size 1 or 2).
* Singatures may only contain up to five lines of text.
* Links in signature are allowed but you may not link to warez, porn, racist or other similar hate sites.

as some people are now having 10 lines in their signature and it really takes uo a lot of screen real-estate when reading on a tablet (and i wouldn't want to turn off all signatures as some people actually have useful things in theirs).