While many of us thought we left our need for highlighters behind when we felt our sheepskins in our hands, the fact is even in the world of work there’s a need for marking up documents. Now, though, those documents are more likely to be made from pixels than from paper. That’s what makes GoodReader such an essential addition to the app library of any iPad owner. GoodReader is an app for reading and marking up PDF files, and at $1.99 it is a super bargain. Not only does it allow you to highlight text in a variety of colors, but to mark it up by crossing out or underlining it.
