
I also subscribe to the "Word of the Day" from Dictionary.com, and I get a random vocabulary word in my email each day. I post these to my Facebook wall, and some of my readers over there have fun coming up with alternative definitions.
Now, knowing obscure words might help when you're playing Scrabble. (Especially if you're savvy enough to understand the strategy of using all those bonus scoring spots on the board—I'm not.) And what about knowing the meaning of those Words of the Day?