It's been a full decade since the first Roomba scuttled off the assembly line and onto the floors of slatternly geeks. Understandably, iRobot's looking back over the period, revealing that since then, it's sold over six million of the units -- with each one covering an average of 705 miles in its lifetime. Along the way, that army of Wall-Es-in-the-making have consumed around two million pounds of dirt, including the odd Lego brick, pet snake and wedding bands --
