Some people like to replace their computer with a new model around the end of the year, and because the end of the year is approaching, this might might be a good time to think about how to save money on the deal. In Short Circuits: Ad blocker plugs-ins for browsers can be handy, but there's another option that uses a file that dates all the way back to the first networked computers. • Ebook organizer and reader Calibre has been updated to version 5. Although relatively weak as a reader, Calibre is the best organizer you'll find. In Spare Parts (only on the website): Is Microsoft thinking about switching to Linux? There's been some speculation about that lately. • Looking for a really cheap computer? There's the Compute Stick from Intel, but be sure to consider its limitations before buying. • Twenty years ago: Adobe was beginning a concerted effort to develop applications for home users, not just graphics professionals. The effort seems to have paid off.