No offense, but this is perhaps the vaguest request for help I've ever seen. You can't really ask for volunteers without giving them even the slightest idea of what they're getting into. Care to elaborate on what kind of development you're looking to do? If it's software development, what technologies/languages will anyone involved be working with or expected to learn/know? What kind of experience are you looking for volunteers to have coming in?
Putting some contact information front and center would also be a good idea, as I don't see any e-mail address listed on your profile page or blog (and making people hunt for it with a post like this is a little bit of a turn-off).