Lum does PvP right

Scott Jennings, aka "Lum the not-so-mad anymore" wrote an historically important (or as he calls it "hysterically self-important") article on how to do PvP right in an MMO, and it is absolutely brilliant. It not only explains what to do, but it also shows up very well all the pitfalls and difficulties in the process. This should be required reading for every MMORPG developer who plans to have PvP in his game. Read it!