I plonked rickman a while back. For someone who is so active in electronics and computing he comes across as woefully ill-informed, you have to spell out everything in fine detail as he seems incapable of any research of new terms or expressions himself. Most of his responses comes across as terribly aggressive.
I only see his scribbles in other people's posts now and it's normally not long before *plonk* appears as they run out of rickman-tolerance.