In conjunction with the Facebook Developers Conference going on today, Sun, Joyent and Facebook have announced that they've partnered to provide free scalable, on-demand infrastructure from Joyent to Facebook developers. According to a Joyent post: "Joyent’s Accelerator on-demand infrastructure (peered with Facebook’s datacenter) provides the very best load balancers, routing and switching fabric, x86 servers and storage from Sun. Facebook developers can take advantage of Joyent Accelerators to quickly launch Facebook applications capable of scaling to millions of users. All for free."
Interested developers can sign up here. One important note: Any Facebook application sitting on a Joyent Accelerator that is dormant for more than 30 days will be re-claimed. Understandably, there are also resource quotas for applications (512MB of RAM and 10GB of storage).
Over and above the utility of this kind of offering for Facebook developers, it would be good to see more free hosting offers for cloud offerings and other online applications. I made the point recently that for scalable online applications, the cost crunch tends to come on the hosting/services side. For more coming out of the Facebook conference, check out GigaOm's coverage.