Providing technical support to an end user can be very daunting, some might even call it a thankless task.  In order to deliver a good service it is important to be able to communicate effectively with the end user, here is a very good list of how NOT to communicate with an end user.

1. Inappropriate nonverbal communication
2. Showing off
3. Losing patience
4. Being dismissive
5. Failure to inform
6. Lack of documentation
7. Lying
8. Giving too much information
9. Not providing training
10. Failing to listen

This list came from an article on techrepublic, the spirit of this list is something that I would like to incorporate into the service delivery process of mendmypc.