Tony Duell wrote:
  It's also a lot slower (you can etch and drill a
PCB in an afternoon --
 I've done it, whereas it'll take about a week for the PCB to be sent back
 to you by post (at least if your snail-mail is anything like ours). 
Good you can do all my PCB's for me. At one time you could do a decent
layout at home, but now days with surface mount crap and tiny tiny
traces I don't it is worth the risk.
  When you're prototyping, modifying, trying things
as you go, it rapidly
 becomes impossible if you have to wait a week for every new version of
 the PCB! 
That is why I use reams and reams of quad paper for my schematics.
For prototyping ideas more quad paper. :)
Ben.