I suggested recently that part of the problem with with LW was a lock of discussion posts which was caused by people not thinking of much to post about.
When I ask myself "what might be a good topic for a post?", my mind goes blank, but surely not everything that's worth saying that's related to rationality has been said.
So, is there something at the back of your mind which might be interesting? A topic which got some discussion in an open thread that could be worth pursuing?
If you've found anything which helps you generate useable ideas, please comment about it-- or possibly write a post on the subject.
I also noticed the low number of high vote posts recently. But I didn't jump to the conclusion that it is a decline. Is it? Didn't such periods of low activity occur before? Is there a real problem or is there more fear of a problem than a real problem? Or is the slow onset of a (natural?) decline in an online forum when the caravan moves on (to avoid the picture of the greener pastures I used recently).
Someone with access to the DB should be able to quickly generate a histogram of the monthly number of posts with >N votes.
Even so, having a place where people can post ideas for posts and see if those ideas are liked isn't a bad idea anyway.