Thanks to all who replied, both on and off list. I've attempted to distill the replies that I got into a coherent summary. I've put the draft on the wiki here:
> Hi Everyone,
>
> This is off-topic, so please feel free to disregard it, but I'm sending it to this list in the hope that it will reach a largish number of users.
>
> I am currently looking at updating some of our advocacy material (which advertises exciting new features like SMP support), and before I do I'd like to get a better feel for why the rest of you are using FreeBSD. If you had to list the three things you most like about FreeBSD, which would you pick? Are they the same as when you first started using it?
>
> David