We at Game Craic have published an article by one of our fellow writers sharing his stories from being a Guild Master in World of Warcraft over the last 5+ years.
It's a really well written article and a great read, especially if you're savvy with the stresses of being a GM yourself. The article is Part 1 of however many it will take for him to share his experiences with you all! Go take a look, WoW-heads!
Tales from WoW: Who'd be a GM?