The big media news this week was CBS Corp.'s (NYSE: CBS) $1.8 billion purchase of online media company CNET Networks (NASDAQ: CNET).

Two years removed from working at CNET, I have some interest in this as if I was still there. The old-time media company buying an old new-media company makes this merger one to keep an eye on.

There are potential areas of synergy and also lots of questions. How will News.com and CBSNews.com coexist? Will one become part of the other?

And how will CNET's television portal, TV.com, be affected by its new sister division, the CBS television network?

And how will CBS make use of the unique tech audience of CNET, and CNET leverage the huge CBS brand name?

Stay tuned.