1. Selling Magazine Articles With Photos
This is an obvious one. Editors of both mass-market and trade magazines love photographs. While most mass market editors may not use your photographs, preferring to hire a professional photographer if they decide to use your article, sending photographs with your queries makes your article queries stand out, and you'll sell more.
Of course, all editors of Web publications love photos too, and will eagerly buy your work.
I'm revisiting the Archives, and this article captured my attention. It's more relevant now that it was in 2009.
The popularity of sites like Instagram and Pinterest shows how much people love images.
Take photos. Sell them with your writing. Sell them from your site, or from the stock image sites.