Think about keywords when coming up with post titles, and change the post slugs or URLs if possible to maximize organic search potential. Also try adding keyword-rich links to your hot topic posts in a sidebar or footer, and even extend the life of popular posts by creating a three- or four-part series that delves into particular points in detail. And if you mention a publicly traded company, include its full name or stock symbol, as those markers may be enough to get your post picked up by a site like Yahoo Finance, or the company's own news aggregator.