Internet Explorer has now once again found itself on a bit of an upswing. According to the latest numbers from Net Applications, IE (all versions included) gained a full percentage point in the past month (following a similar gain in January) to sit at a market share of 53.83 percent, its highest level since September of 2011. That growth came largely at the expense of Firefox and Chrome, which each dropped less than a percentage point to 20.55 and 18.57 percent, respectively (Safari and Opera also saw slight declines). As others have noted, Net Applications did recently tweak its method for measuring browser usage, although it's not clear if that alone accounts for the shift in IE's favor -- perhaps the new ad campaign is working? You can find the full breakdown at the source link below.