Same here, I used to awhile back, but later on just stopped. I agree with Jim2Macs, about the looping. I had that and our emails was spamed with 1000's of auto responding emails.

There are quite a few amount of companies, which still use it a lot these days. I think the ones that are more successful at it, are ones that create a NO-REPLY email. So when an autoresponder goes out, it basically BLOCKS all incoming email. This way, you can send out auto-responders without getting stuck in this spam email loop.