Great side-bar in the August 2005 issue of Fast Company gives a run-down of proper blogging etiquette, comparing it to hosting a successful cocktail party:
1. Make introductions (i.e. link to other useful and relevant blogs)
2. Be authentic (i.e. if you’re not normally scintillating, no worries; just be useful by linking to other resources)
3. Dress business casual: “Stay away from topics you wouldn’t share with your mother — or without a nondisclosure agreement.”
4. Don’t scrimp (i.e. blogs are low-cost to launch but be sure to spend enough time to keep yours fresh and updated)
5. Have a contingency plan (i.e. if you’re criticized or an issue blows up in your face, be prepared to respond honestly and openly).