Holy conspiracy theory, batman! Dvorak's the guestblogger 'cause we're interested in seeing what he'll blog. Last time I checked JCD was a columnist for PC Mag (which I don't read) and hence not in a position to offer article assignments to anyone. Aside from that there's the fact that writers usually write for money, not whuffie, which undermines the theory that BB (which doesn't pay nothin' for nothin') is offering JCD any kind of plum for his services here.