I like the idea of the daily word drabble comm. Very much. Not sure, though, whether it will work for people to come up with a drabble every day.

Trouble two: I have trouble remembering the new words, even when I'm making posts about them.
You could tag the posts, with the intial. So your post on ACEROSE would get the tag "intial: a". And all upcoming words starting with A would also go under that tag. Later, you can go to the tag and see if you used that word before. Does this make sense?

*is anal*