OpenMoko really isn't doing much these days and they have a large surplus of USB IDs under their vendor ID and MAC address block. With them likely going to waste otherwise, they've turned to handing them out to anyone working on open-source hardware/software that could benefit from some IDs.
Registering a USB vendor ID normally costs around $2,000 USD while a block of MAC addresses costs $1,600. With there being large sums of IDs left under the OpenMoko Inc company, they're looking to freely dispose of them for worthy open-source causes.
Additional details are available via Harald Welte's blog.