So, any vin greater than the current minimum is elegible to act as a Masternode, just check the box. Multiple MNs can thus be easily run from one machine, no static IP required, subject to bandwidth limitations.

Personally I would still rent a VPS.

My initial impression is that Spread Masternodes are a HUGE improvement in terms of ease of setup and administration vs. Darkcoin Masternodes. Which is great, until a bunch of Windows users get hacked and lose their Spread. And the service levels of a constantly fluctuating MN network (more so than Darkcoin as home users join/leave) remain to be seen. I don't see there being too many issues with this, but we'll have to see how well the network performance scales.