Japan is distributing iPads to its sumo wrestlers because cell phones are too small for their hands.

They will be distributing them to the 51 sumo wrestling clubs or “stables” in Japan. This way the stablemasters can stay in touch with the wrestlers without having to use computers or cell phones. In the past the wrestlers have been missing information sent by phone or by fax. Cell phones being too small for them to use properly is the likely culprit for this.

The above picture is apparently the iPad vs the iPod Nano.
(source)

via OMG-Facts.com