I had one for a few months. It always hid, which I read was good. Every now and then I'd see his little eyes peering out waiting for his lightfoot. I did daily WC on that tank to ensure good WC, but it died. I was upset. Troy's roommate IIRC, in college kept one, and he would feed it the scraps of his meals, like sandwiches. There's some funny videos on youtube of them coming halfway out of their tanks at feeding time. One of them is of this kid, and his octo grabs his face with a tentacle and he freaks out. It makes me laugh every time.
For anyone interested in keeping one, check out www.tonmo.com