It's no secret to Mac users that if you own more than one machine, Apple's MobileMe service is a great way to keep your data synced between all of your machines. And while it's true that there are plenty of methods of doing everything that MobileMe offers for the much lower price of free, I have yet to come across a one-app solution.
Google has released a free 22-page document to help webmasters optimize their sites' through the use of best practices and minor tweaks. They cover a dozen or so topics, and I highly recommend the document (direct PDF link) as a great read for anyone who has a website.
All work is original and copyright 2013 by Ash White, with the exception of a handful of free third-party libraries, including the Scriptaculous JavaScript framework, Lightbox image overlay, Google Font Directory, Google Code Prettify, and Eric Meyer's CSS Reset.