as an avid WW reader I have a problem (well more than one

Weight weenies is about weights, in most threads we discuss weight of components.
Unfortunately nowadays the world is split in two: those who use metric units (:thumbup:) and those who use imperial units (:roll:).
To a lazy boy like me this means ending up switching to google all the time to write stuff like http://www.google.com/search?hl=en&lr=& ... tnG=Search , but at some point it starts getting annoying.
To solve the problem I am writing a Firefox extension that automatically converts units.
The idea is to simply replace every occurrence of "xy lbs" with "xy lbs (zw kg)" in the complete text (and of course the opposite for you overseas folks).
I have a first working version (still some bugs to correct), but I'm interested to hear suggestions.
What do you thing? Would someone find it useful? Should I also implement conversion for other units?
Happy rides
Frenk