This isn’t a plugin or hack obviously, but I put it in here in case anyone is considering the same sort of thing.
I’d been considering installing a hack for some kind of asides/linklog sort of thing, but rather than mucking about with one of the various plugins out there I just used a Digg.com RSS feed from my profile at their site. Basically, I just made a static page with the Digg RSS feed for stories I’ve “Dugg” and I was pretty much done.
The idea is that any links I submit to Digg.com, or any links/stories I click “+Digg” for on their site, get added to the RSS feed in my profile, and hence, appear on my site. Works rather well.