The ranking is a good idea, as well as the idea to somehow report in an accessible manner (to all) when a global workaround has been achieved. I would actually suggest adding a (free) content management system to a subdomain of your website (such as DotNetNuke, on workarounds.sh4bugs.c o m ) so that users are an easy click away from getting to workarounds, instead of needing to look through the list of Open/All BZ list for a particular workaround.
I use DotNetNuke for
this site, and it allows me to really quickly add new and formatted content with no pain.