I've been involved with some hiring, but not a lot... and I would tend to agree that I wouldn't reject a resume just for listing certs on it. If I see a resume with experience and some cert listed at the end, I would not count it against the person. Now if their resume primarily focused on how many certs they have and not on experience, I would think they are entry level at best. If I am looking for entry-level, I may still give them a shot though.