This post is intended mainly for medical bloggers, but it has applications elsewhere. It’s about links and uniform resource locators (URLs), terms that I didn’t fully appreciate until the last year or so. That’s because like most of my colleagues and readers, I grew up reading printed books, newspapers and magazines. Now, perhaps as much as 90 percent of the non-fiction I read is on-line.

The Web has a lot of advantages for readers – you can see multimedia presentations, or double-click to enlarge a graph of interest. What I think is best, though, is the third