I use a small, written ('script') letter l.

For some reason it didn't show up. It was a wikipedia link, but after I posted I n oticed the link was not there. Sorry. http://en.wikipedia.org/wiki/SI_Unit_Prefixes

if that was the biggest complaint i had today, i'd be one happy camper.

The article says litres can be L or l. I disagree. I beleive it is L. All the textbooks I have looked in say that.

OK, I just have to have a small rant, as seeing it every single day drives me fucking nuts. For those of you who like to quote figures and technical measurements, the unit has a space between it and the magnitude of it. For example ten litres is 10 L. FFS!