When the BBC changes its homepage its likely that quite a few people will notice: they have over 9 million unique browser views per week. So they do it carefully… with a lot of explanation and a beta launch.

In the blog they talk about enabling serendipitous discovery, with a link to a talk from Director of Future Media, Ralph Rivera. The slides spell out a strategy for BBC Online which is elegantly described in a very visual way:

[slideshare id=8445171&doc=industrykeynote-110628063633-phpapp02]