Tumblr narrowly beats Posterous in Mashable readers' poll
Who's the favorite in the "simple blogging" category? Well, in Mashable's neighborhood, Tumblr got 51% of the vote, with Posterous at a respectable 42%.
When we consider that Posterous is still somewhat wet behind the ears that's a really great showing. Leveraging what people already know to do, such as emailing and attaching photos, etc., is making Posterous a fave. Adding themes (including pulling in Tumblr's) is going to help, too.

