Welcome to the site, dancedroid is a short cut for the dancingdroid icon.
If you see that term you are probably using the mobile app. If you login through your pc you will actually see a dancing droid.
Yea you cant see smileys on mobile but you can on the computer. Its just spelled out on mobile like Chizzele said. Anyway glad to see another NC member here. I'm over here in the Rocky Mount area