Facebook is great for sharing pictures, keeping up with friends, making new ones... and saving lives, it turns out.

Warren Michigan man, Jeff Kurze, had failing  kidneys.  He had been on dialysis for two years, and after a stroke last fall, doctors told him it would be 3-5 year wait for an organ. That's when Jeff's wife, Roxy, took to facebook:

Wishing a kidney would fall out of the sky so my husband can stop suffering," Roxy Kurze, a 30-year-old web designer, wrote on her Facebook wall. "So if anyone knows of a live donor with type O blood, PLEASE let me know."

Some people replied to say they'd get tested. But Roxy was skeptical.

"Sometimes people say stuff just so that other people will comment," Roxy said.

Then she got a private message from Ricky Cisco, a 25-year-old comedian she met once through work.

"We never even liked each other's posts," Roxy said, explaining that although they were "Facebook friends," they were basically strangers.

Cisco, who knew he had type O blood, wrote that he wanted to talk about Jeff's kidney, and asked to meet Roxy for coffee.

"Roxy's post sort of resonated because I knew right off the bat I was a candidate," Cisco said.

Continue on abcnews.com