We’re trying out an advertising service called Infolinks, which analyzes the page content and creates links in the text that pop up a little dialog box when your mouse hovers over them, containing an advertisement or link to a related site. The dialog box goes away automatically when you move your mouse away from it, and there’s a delay built into the hovering routine, so it doesn’t pop up when you mouse passes over on the way to somewhere else. The Infolinks are green with a double underline, to let you easily distinguish between them and our normal links.

So don’t worry, your browser hasn’t caught a virus, the links are supposed to be there.