Re the Ardumap, there was a similar thing a while back started by Mowcius. I tried to add myself but got an error saying the my forum user id "is a number". ??
As for the Pi, I won't be getting one as it's not appropriate for the things I do, thank goodness by the looks of it. Are you saying that the Pi is supposed to be powered from USB despite needing 700mA?
Just today I took delivery of some LCP Xpresso boards, I hope they aren't as much trouble
Rob