Yeah, Mark has been around for a long time and is 36 now. Did a few gay porn scenes back around 2000 as "Rick Ritter" and then straight porn as "Nick Jacobs" up through 2010, seemed to disappear from porn, and then made a bit of comeback for a few years. I saw him in San Diego for a fair session in 2010 - Guy gave a decent massage, but was not really all that interactive for more. He was a really nice guy with whose body hasn't changed that much over years - you can see from his picture he now has at least one tattoo and also a beard. There some recent clips of him in action on the internet if you search around. Discussion here years back was that he was a flake - I didn't think so, but personal experience with him - and watching him in gay and straight films - is that he doesn't get that much into on-camera sex or escort sex - kind of lies there a lot.
He is recent scene of him with his beard -- http://www.myvidster.com/video/30903410/nick_jacobs_rick_ritter