After previously noting that listparser chokes on invalid XML (as it should , but eventually won't ), I've taken it upon myself to patch the software that was creating invalid XML in the first place. I found that Planet KDE's FOAF blogroll was being created by a plugin for rawdog.

I wrote to both the plugin author and the rawdog author and got the go-ahead to update the plugin, so I downloaded the latest version of the plugin and set about creating unit tests. Right off the bat I discovered a bug in rawdog: it was reading -- but ignoring -- my custom configuration files! The solution is to add a single line near the bottom of rawdoglib/rawdog.py:

  elif o in ("-c", "--config"):
      try:
          config.load(a)
      except ConfigError, err:
          print >>sys.stderr, "In " + a + ":"
          print >>sys.stderr, err
          return 1
+     rawdog.sync_from_config(config)

With that fixed, I don't think it'll be long before the plugin will be outputting valid FOAF and OPML files.