While most potential Chromebook buyers are probably looking something small and cheap, Acer's targeting a slightly different customer with its latest entry. Its new Chromebook 15 is the first laptop running Google's browser-focused OS with a 15.6-inch screen. It's still relatively inexpensive, starting at $250, but it weighs in at a hefty 4.85 pounds. The Chromebook 15 isn't meant for people who've grown used to svelte ultraportables -- instead, it seems ideal for schools (where Chromebooks are already doing well) and older users who might appreciate a larger display. It's more a primary computer than a secondary portable PC, which is pretty much the opposite of how most Chromebooks have been positioned so far.