After opening my inbox, I got a sweet little suprise from the people over at moka5
Apparently I'm one of the "the über virbu" and found worthy of an invite.
I did get a glimpse at what they are offering though. Moka5 looks to be offering something along the lines of the VMWare Appliances, but they have created a VMWare Player addon that lets you centrally manage and share what Moka5 call LivePC's. I haven't been able to test it properly yet since it requires VMWare Player and I only have VMWare Server installed.
So far the sites LivePC library consists of 7 setups, some made by the Moka5 administrator but some are also contributed by other beta testers.
Moka5 has created a service that turns standalone VMWare VMs into centrally manageable and updatable VMs through their web service and they also provide detailed instructions on how convert an exiting VMWare VM into a moka5 LivePC (this is the way they are created). I'm sure this will be a great service and that a lot of VMWare appliances and pre-configured desktop VMs will be converted and published on their site.