Posted this to the "buyers guide" thread, but didn't get much help there - I'm a literature professor, needing to replace my 2009 13" pro, and considering the new macbook. I love the idea of ultraportability (I work in archives and libraries a lot), and I don't mind the lack of ports, but has anyone used the new macbook for intensive writing? I'm midway through writing a big academic book, and worry that the macbook's screen might be a bit small, and that it somehow might seem too flimsy for daily heavy use. Basically, I want to know if this computer can be a serious work computer (for word processing and pdf based work), or whether it's a glorified facebook machine. Any advice very appreciated!