At the Rocky Mountain Software Symposium a few weeks ago, an attendee said something like "All this stuff about broadening yourself sounds good, but companies want to hire specialists, not generalists." Sad to say, he's right, but there's a related fact that's just as important: companies may not want to hire generalists, but they certainly like to employ them. That is, if you can convince them to hire you, you'll have better than average job security.
(For a darkly humorous take on this, read Anne Learns to Recruit.)
Michael has added a feature I asked for: a "recent links" panel. Here's a picture. I've been trying to find time to start working on that myself, but Michael beat me to it.
I can't wait to start using it!