Honestly, it's pretty occasional. The only one I definitely remember exploring was Samantha Henderson after listening to "Cinderella Suicide," because I'd never heard or read anything by her before. Maybe because I'm already somewhat familiar with some of the authors when their new story pops into the feeds: People like Greg van Eekhout, Tim Pratt, Mur Lafferty, Matt Wallace, Eugie Foster, Ann Leckie, and Cory Doctorow.
Still, a lot of those people were introduced to me via Escape Pod.
Also, when I tend to look up authors, I tend to spend more time checking out their blogs than I do on their websites. Blogs are usually more interesting to me for some reason.