Will this be an annoying fad or an interesting derivation for popular entertainment?

One of the characters on the tee-vee show "Crossing Jordan" has a blog: not the actor, mind you, but the character of Nigel.

Memory serves that Homicide tried a stunt like this with a "second shift" that only existed online, but it never went anywhere. (After googling it up, I came up with this: although my memory of Cool Hand Luke had shifted, my sense of the Charm City detectives was accurate.) (Memory also serves that Det. Bayliss had a website which was involved in a plot line, but it wasn't a blog).

Done correctly, this sort of thing could certainly add juice to a cult show: think of what a blog for different characters could have done for Twin Peaks in its first season, not to mention the X-Files before it jumped the shark (noting, of course, that it was an alien albino left-finned shark that ate Joe Kennedy Jr., mind you).

The key, of course, will be understanding the mediums and how they could possibly interact: if any entertainment moguls are interested I have some thoughts on how this could be done quite well.

After all, LLamas want Porsches too...