I just read this article on a French site: outil-referencement.com/blog/i ...

It's cool, I tried it for my site:

google.co.uk/search?hl=en& ...

As haven't updated in months, there's no new pages indexed. In contrast, here are the pages indexed in past 24 hours from Blogoscoped:

google.co.uk/search?hl=en& ...

Nice feature isn't it! Useful for those of us wanting to keep an eye on how the index is changing

David

or you could just use the advanced search :-)