I've got rougly 900 pda-sized URLs going into an online system I'm building at
http://my.plkr.org soon.
I'll be comparing the sites I have with the WCC sites, to make sure there are no dupes. Once it's up, I'd like the community to maintain the "freshness" of the sites listed and the metadata, as they did for
http://openurls.plkr.org/.
I personally do not like the JPluck XML format, it leaves out quite a few attributes, but those will be corrected in time. I use perl to fetch my websites and convert them to Plucker. So far, it's the fastest thing I've seen do it (and the most capable).
Keep up the good work.