Uses for Mobile Agents

I've recently dabbled in creating mobile agents in Java and am interested in expanding my knowledge. However, whenever I google stuff about mobile agents the results are usually papers or textbooks from nearly a decade ago, talking about mobile agents being the future of the internet. The Java Aglets project doesn't seem to have any recent work on it either.

Are mobile agents still relevant? Are there any uses for them and is it worth taking the time to learn about them?

So it's like any other distributed program, except it…
1) inexplicably restricts itself to one node at a time, and
2) installs and deinstalls itself for each work unit.

Gentlemen, I believe we have discovered ENTERPRISE 2.0.