Lots of people know about AS/400s. Programming on an AS/400 however is a different story, as/400 programmers range in the 40-70 year old range there's not a big group of them hitting the market because alot of colleges no longer teach it, infact there's a big myth that the AS/400 is legacy because it's old which couldn't be further from the truth. IBM eserver AS/400 iSeries are multiprocessing multiuser beasts, they never crash, they don't get viruses, and they've never been hacked.