From Linedancer magazine

NEVER:

• Carry food, drinks, glasses, cans or lighted cigarettes onto the dance floor.
• Walk through a line of dancers to cross the floor - walk around or wait.
• Stand on the floor to talk to talk - if music is playing go off the dance floor to chat.
• Start a different dance unless there is plenty of room and you sense it acceptable.
• Hog floor space to "perform". If the floor is full take small steps, and watch for collisions.
• Stop in the middle of the dance to teach, as you will be in the way. Go off the floor to teach.
• Let your feet, knees, arms or elbows become dangerous weapons on the dance floor.
• Show off, Crazed variations, turbo spins, high kicks and jumps just puts people off - you!

ALWAYS:

• Listen to the DJ. It is customary for a DJ to designate the dance and to "count in".
• Encourage and support beginners. It only takes a few kind words to make a new friend.
• Go to the front when starting off a dance. Others can then line up behind you.
• Be gracious and apologise when caught in a "bump" even if it was not your fault.
• Replace any drinks you accidentally knock over and be sure you say sorry.
• Leave the outside edge of the dance floor clear for partner and couple dancers.
• Give way to dancers around the outside of the floor.
• Dance with the flow. The Line of Dance (LOD) is anti-clockwise.
• Show appreciation. Applaud live acts, instructors and DJ`s - they work hard for you.