Here is another article from ProSoundWeb.com and this one is for all sound technicians in the field.
Have you ever worked a gig where too many things went wrong which resulted in less than stellar sound mix? We have all worked on a gig or two like that and have learned about "What Not To Do On a Sound Gig"!
The following piece is a top 10 list entitled: 
Top 10 Reasons For Bad Sound (And What You Can Do About It…)

"Great mix engineers remain open-minded and stay in the present moment so that they can actively listen to what’s happening in front of them. And then they take action."


Here is the weblink for the article:
http://www.prosoundweb.com/article/top_10_reasons_for_bad_sound_and_what_you_can_do_about_it/P1/

This article is 5 pages in length on the website so, don't forget to select the next page link to view the entire piece.

Cheers!
Ron