This column brings you the most interesting and useful business and financial commentary on technology from around the Web every day. Bizsmart Link: No  Longer Unsung Samsung Turns  Up Heat on Apple “The smartphone battle is set to go nuclear this year with Samsung planning an Apple (NASDAQ:AAPL)-like unveiling of its Galaxy 4 (PINK:SSNLF) phone next month and its Cupertino Calif.- based rival set to launch a cheaper iPhone this summer.   “Both are striking at each other’s core and industry insiders expect Samsung to fire the next salvo on March 14 with the introduction of the Galaxy 4 ...