The new Technorati favourites feature looks really interesting. You can create and share a list of your favourite bloggers a - bit like a mixture of a blogroll, opml file, aggregator and search tool rolled into one.
A couple of small gripes though. I want to use it to replace my blogroll. However the limit of 50 blogs prevents me doing this and having imported a load of favourites from an opml file there appears to be no way to batch remove them.