] ] Mozilla's Firefox keeps chipping away at Microsoft's ] massive lead in browser usage, two Web metrics firms ] reported Monday. ] ] San Diego, Calif.-based WebSideStory, which last released ] usage numbers in January, said that in the last five ] weeks, Firefox has gained an additional 0.74 percent to ] account for 5.7 percent of all browsers used in the U.S. ] Microsoft's Internet Explorer, meanwhile, now stands at ] 89.9 percent, a drop from January's 90.3 percent, and the ] first time WebSideStory pegged IE as falling under the ] 90-percent mark. Firefox Nips IE Ankles Again |