Should we all still go through everyone account to see if they are still active and if not ask a question about it?
No, but it's natural for some people to wonder where a colorful member like TMAN has gone off to--especially when you hear about situations like Bruno's. He did a wonderful thing by announcing his permanent departure IMO, but that's not something 99.999% of people would even think to do.
He's disappeared for long stretches of time before, as have other established members like Lauda, Vod, hilariousandco, and Quickseller if I'm not mistaken. I wouldn't worry until it's time to worry, if you know what I mean.