How granular is your data? Can you see where they’re dropping off? i.e. are they reading a few posts and then leaving? If so, then you could conceivably gate some of your content. If they’re bouncing before they read then they’re not finding what they were expecting and you could consider a one question exit survey to figure out what it is that the do want to find.
Analysing the search terms should tell you a lot. What search terms are bringing in the most traffic? Are the organic searches from people that are literally looking for very basic information and are then freaked out because you ask them what their favourite currency is? There is no point in converting the wrong audience. That’s not a solid strategy.