A mother and father's wish for Christmas cards for their son with brain cancer has brought an avalanche of mail in Ohio, thanks to the power of the Internet.

Thousands of cards for 7-year-old Nate Elfrink have arrived at his home west of Columbus on each of the last few delivery days.

The boy's mother says it all started with a simple online message she wrote saying cards would be appreciated by her son, who's in hospice care. As Nate's father puts it, people took the request for holiday wishes "up Mount Everest," spreading it through e-mails, Facebook and Twitter.

There are so many cards, from all over the world, that church volunteers now open and sort them. The family also has been receiving phone calls, including one from a U.S. soldier in Afghanistan.