What about interesting RSS feeds? Anyone that uses Google Reader for RSS will have a 'shared items' feed that other people can subscribe to. I'm guessing that LW readers would tend to have an interesting 'shared items' feed if they use that feature?

For example, mine is http://www.google.com/reader/shared/wilka.hudson - although most of the stuff I share that would interesting to LW readers actually comes from LW, so maybe it's not such a good idea after all.