Thanks to everyone for the words of welcome. I may well be joining you on the Bret thread, probably when I have something to say that doesn't offend against etiquette, if you know what I mean.
As for the user name, it's (South Wales) Welsh and means "a fly", as in flying insect. It's a nickname I was given at one time, loosely based on my real name, and rather suggests someone who flits about from one thing to another but isn't as pretty as a butterfly, which would be about right. I think it's rather a pretty name for a class of creatures not usually very well regarded. Coincidentally, it also sounds very similar to the Welsh word for a medieval wandering poet or minstrel. How romantic is that?! So it's not, in fact, really pharmaceutical at all.
Look forward to communicating with you all from time to time.