Tigerhawk is starting a new blog The Spirit of Enterprise, and letting the old one go. He explains here. It is a topic I know less about, and have less interest in, though Sponge and Dubbahdee, at least, might be fans.
I doubt I will put the new on e on my sidebar, nor delete the old one just yet, letting it drift to the bottom instead, in case it's a false alarm. It usually takes a long period of inactivity before I delete someone. Good marketing would decree that I always have crisp, fresh, active blogs there, but I'm not wired that way.