They have asked me to write an article for them, but I am struggling a bit with what to write. I don't want to give financial advice, and I don't want to attempt to predict the markets. I have been reading their editorials trying to get an idea of what to cover.

RR

I read the site regularly. IMO, most of their readers would be unaware that corn is a poor raw material for ethanol production because of the poor EROEI. You could also cover the expense involved in CTL production. You are probably aware of this, but quite a few of their articles are not financial in nature (these are usually geopolitical).
I may just write a bit on ethanol. I have also been asked to write up a summary of my Brazilian ethanol critique for World Energy magazine. So, I may as well just work on these articles in parallel.

RR

I would say write about exports because it's PO, but with a "financial" twist.