Why isn't poetry popular?

Interesting blog post here, at the Sidekick Books blog, on the popularity or otherwise of poetry. In the light of Salt's announcement this week that they'll soon be ceasing to publish individual collections of poetry, concentrating instead on their Best British Poetry anthology series, it's an issue that's bound to get a lot of discussion in the coming weeks. Not sure about the whole 'reading poetry while sitting on the toilet' debate, though...