Look at the bulk of the posters here...
We spend a LOT of time in the games forum... and not much at all in the other forums... we talk about Magic once in a while... But honestly, if I were a prospective member looking for Magic discussion, this isn't really the place for that anymore... if you want to drum up membership, we need to start discussing magic topics. Now that the WotC column Building on a Budget is gone... we should find a way to pick up the slack.
We have some really bright players here, I know because I lose to them all the time in the forums... We need to start posting in the magic threads again, to try and keep the lurker's interest enough to get them to join, and finally to contribute. Articles don't suck either at bringing in readers. Google is a wonderful thing. When I google Casual Magic.... guess what site comes up... you guessed it, this one.
We need to start building content again - and not simply content about our forum games - as great and interesting as they are.
I have a column idea... Common Knowledge - discussing the best common cards and how to get the most out of them.