It's been just over a month since Google unveiled its gorgeous and affordable $249 Samsung Chromebook only to surprise us days later with an even cheaper system, the $199 Acer C7 Chromebook. At first glance, these two laptops are very similar, both in purpose (cloud-based computing on a budget) and in specs (11.6-inch display, dual-core CPU, 2GB of RAM), but there are significant differences under the hood. Samsung's offering achieves its svelte form factor, 6.5-hour battery life and attractive price via