Welcoming the new year with a trumpet of doom, WhatsApp is bringing misery to many users. If you're using old versions of iOS, Android or -- heaven forbid -- Windows Phone 7, Facebook's popular messaging tool no longer works. There is a brief stay of execution for anyone still packing a BlackBerry, but as of June 30 these will also be cut off. WhatsApp says that "BlackBerry OS, BlackBerry 10, Nokia S40 and Nokia Symbian S60" will stop working by the middle of the year, but it is the hundreds of thousands of Android and iOS users that will be… [Continue Reading]