IT Security Certifications?

certifiedSecurely asks: "Network security seems to be a hot topic these days, but I have seen very little on Security Certifications. Searching the web has turned up several offerings: http://www.securitycertified.net/ and http://www.isc2.org/ are two examples. I was wondering if any of the readers had any insight into the various security certifications and their respective market value and dominance, future longevity, etc."