Hey.
I was recently in a random heroic dungeon with a member of your guild who is named in the thread. A certain Night Elf Warrior called Selferas.
There was a shaman in the group who was a fresh level 80 and so may have needed on certain cloth/leather spell power gear. Being a shaman he cant need on that sort of gear and politely asked if we call roll pass on it so he could pick it up. No problem.
Now also in the group was a level 80 priest who also happens to be my girlfriend. She is relatively new to WoW (and gaming in general) and she didn't quite understand exactly how the new roll system worked. I was busy explaining it to her when she stated in party chat by mistake that she didn't quite understand (supposed to be a whisper to myself).
In response to this, Selferas said "god you are stubid then". Which was a little uncalled for, but none the less. He continued.
He did try and explain it further but my girlfriend thought it was a little too far to insult her in the first place and chose to disband (knowing that as a DPS she is easy to replace)
After I called up Selferas for being rude he then said "shes a bitch if she leaves for that" again, definitely uncalled for.
Those 2 things weren't really the worst thing though. What really got to me was his next line.
"fucking cunt ass bitch whines, do i look like i care".

Now the previous things were uncalled for, but that was just down right malicious and not something i'm going to take lightly. I know this rant seems pretty pointless to you, but your guild rules state first and foremost
"#1 - don't be an ass - remember that everything you do in game is reflected on the guild."
I would definitely say this is a poor reflection on your guild, even if it is only the one player and is something I thought I would bring to your officers attention. If thats the sort of player you chose to hold in your ranks then you might want to think again about your guild rules in general, because rule number 1 is being broken right of the bat.
This is going to get flamed, never mind.
Gutrek.