Pocket-Lint: The VSD220 two things. First, it's a monitor - which is obvious, you can tell that just by looking at it. Second, it's an Android-powered all-in-one computer - which isn't obvious, and would be hard to tell by looking at it.
Costing about £330, for a 22-inch LCD monitor, it isn't the cheapest display you'll ever consider. You could get a bigger monitor for less, so ViewSonic is clearly hoping that the Android portion will tempt you sufficiently. Is it worth it though? Well that's what we're here to determine.