Scoble hands out advice to any bloggers mentioning their employer:
"The thing I like about working at Microsoft is that I can talk smack about my boss (I wish he'd give me a reason, though, Lenn is one of the best people I've ever worked for) and I can write about things that I'd like to see Microsoft do in the future. Yes, there are risks."
...It's not easy writing in public. All it takes is one paragraph to lose credibility, have people laugh at you, get you sued, create a PR firestorm, or get your boss mad at you. Think about that one for a while. Just a few hundred pixels on the screen can dramatically change what people think about you."