Why is the raven like a writing desk?

Question

think about that one for a while!

Answer 1

Because they both come with inky quills!!!.

Answer 2

I have hated that riddle ever since the day I read that book.  

Answer 3

http://www.straightdope.com/classics/a5_...

Answer 4

XD I love that book- I actually thought up an answer about a year ago for it-

"Because both grow opinions (pinions)."  

(Pinions are the largest feathers on a Raven's wing- a Raven has 5, a common Crow 4).