Onders - 10:38 pm on Feb 20, 2012 (gmt 0)
I'm in total agreement with Marketing Guy here - if you are getting the traffic to the informational pages, but not converting it, then optimising that is what you need to look at. Once you start moving content around to other pages, putting it all on sub domains, redirecting pages etc there is a real possibility of losing all that traffic, which will leave you in a worse off position.
The posts above have thrown up lots of ways in which you could try and convert the traffic better - from incentivising data capture, to social media sharing. Another thing you might want to do on the pages is look at what keywords you are targeting. If they are all informational phrases, would it be possible to add some buying terms? This could see you get more relevant traffic.
I think you're in a pretty positive place - Google seems to be ranking you well, even though the traffic isn't turning into money yet. So don't do anything drastic, because if you lose the traffic then you'll have much bigger problems!