Yahoo! has very liberal employee blogging guidelines. Here is a copy from Zawodny. JR Conlin breaks it down to:
1. We’re not going to save your ass. 2. You still work for us, so don’t blab secrets or we’ll hurt you. 3. Get someone smarter to do follow ups with money people. 4. Be nice to the people you spend eight++ hours a day with. 5. Get your facts straight BEFORE you post. 6. “It Sucks” is not a good post. 7. Blab about everything and nobody will like you.It's nice to have something rather than nothing from a company.