Eric should write a useful blog post on...
A post where you can ask me to comment on a specific topic.
So, if you want to know what *my* opinion is on the effects of the size of Venuzuelan oil reserves on the balance of power in OPEC, you can ask. I won't answer, but you can ask.
Or, you could ask something that I might know a little bit about. Not that that's ever been (or ever will be) a requirement for topics that I write about.
(This is really just here so I can update the "suggest a topic" link on my main blog page...)