I have always been curious about these, too.
I think there's a big market for devices like these when the price comes down a bit more.
There are probably 8 zillion reviews of it at Amazon.com. Might be a good place to start.
Another option, if your budget for the device can go a bit higher - is one of the fairly new mini laptops. Asus has several. HP has one. And Dell just entered the market with Inspiron Minis.
When that Mylo hits the $100 price point, I'm in.
