In recent years a new skill has crept to the top of that list. You may not hear it uttered by HR directors, but it's there. And it might as well be printed in 72-point type at the top of every young careerist's résumé: self-promoter. The skilled self-promoter is the guy in your office who everyone thinks is a real go-getter. He's the one volubly telling your boss how the big project is going, even though as far as you know he's spent most of the day playing Scrabulous on Facebook and beefing up his personal Rolodex. What this workplace striver knows--and you might as well get used to--is that these days, telling people you're good at what you do is just as important as being good at it.