Always an oldie but a goodie.
A Tri-bond is a word puzzle where three words are posted which are all linked by a common word, e.g:
Roll
Note
Blood
The answer here would be "Bank" - Bank Roll, Bank Note, Blood Bank. Slightly more abstract clues can also be used to increase the difficulty of the Tri-Bond, such as referring to phrases or idioms.
If you post the correct answer, you now have control of the feather and must post a Tri-Bond of your own. You can pass up your turn by saying "Jump Feather" and then the thread is open to whoever posts a new one first.