BlackBerry 10 may have been a non-starter, but in the world of mobile OSes, 2011 may well go down as the year that HP effectively killed webOS. After the TouchPad launch was met with disappointing reviews and lackluster sales, the company announced that it was pulling the plug on its line of hardware running the beloved, but troubled mobile operating system. The Touchpad did see a temporary resurgence, however, thanks to a $99 fire sale, briefly becoming the second best selling tablet, according to some studies. webOS may have seen a reprieve as well, when new CEO Meg Whitman told her staff that webOS may, in fact, be getting a second life in the wonderful world of open-sourcing.