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Shift Registers with Arduino

On this page there is a tutorial for using shift registers with arduino http://www.arduino.cc/en/Tutorial/ShiftOut

The person has attached two shift registers togther by plugging one into the arduino and the second is getting serial from the first register. Would it be possible to attach same 10 shift registers in this way? Would it be slow or inaccurate? Would the code be over complecated? Would there be to much current draw?

Any help is good