I could see it working well. Overall, there's a good sense of balance and flow, but my main concern would be the transition between the each-post detail mode an

I could see it working well. Overall, there's a good sense of balance and flow, but my main concern would be the transition between the each-post detail mode and the single-post detail mode of the right column. The arrows and shading don't quite seem to express the change in linking readily enough; I'd suggest a more pronounced visual differentiation between the two.