This is currently being updated every hour, by a script that can very easily be adapted to any RDF-using site. I'm aware of the repeat entries, that was due to my testing it twice to get the bugs out :) Also, it's going to turn off comments as soon as LJ::Client supports it.
Is there anyone interested in running a bunch of these scripts (or, I could easily integrate various RDF-using sites into one script)? Could/would it be better for LJ to run them locally?
If Advogato updates within the next hour, I'll be able to make sure this works.