On a day when Microsoft announced 5,000 layoffs, the 7 or so people losing their jobs at Digg may seem like a drop in the bucket. But that represents about about 10 percent of Digg's 75-person workforce, whereas the 5,000 at Microsoft represents 5 percent. We have added Digg to our Layoff Tracker. This move follows layoffs last October at sister company Revision3, which was also founded by Kevin Rose and Jay Adelson.