Blog Azeroth

First, let me apologize if this topic is already somewhere here. I scanned through the list and nothing jumped out at me. As I wrote this, I began to ramble about how this question came up. I decided it was too long to post here and have posted my rambling on my blog at http://kyrilean.blogspot.com/2008/03/co ... lping.html. In it I talk about the more specific issues leading up to my question. I would appreciate it if you took the time to read it to further understand what I'm trying to get from the question, but it does ramble some and isn't necessary.

Question: How does one go about giving constructive advice to others about their gear, talents, skills, spells, class, or any other aspect of the game? How do you handle giving someone advice who “knows-it-all”?