[ISerializable] If you haven’t checked it out yet, you should really take a look at http://feeds.scripting.com/rankings. Basically it’s a site that allows you to upload your OPML file and share it with others. The link here shows the top 100 feeds people subscribe to. You can also go to each person and see their OPML list.

Wow - that’s a really good idea. I uploaded my blogroll, and will keep an eye on this. Might be interesting to do some visualizations on it aswell