I believe in microchips, but people should be warned about the risks they pose. My cats are indoor only and have no interest in being outdoors, so I won't have them chipped. My boyfriend has a kitty he adopted from the Humane Society and she was chipped. We are now keeping an eye on her because of Halo's story. When he adopted her, I was so glad she was chipped because of Kuhio's story. Life is indeed strange.