Facebook Makes Their URLs Search-Engine Friendly

I just noticed, while browsing the I’m On Facebook — Now What??? Facebook Page that Facebook has now made their URLs search engine friendly. So now, instead of:

http://facebook.com/profile.php?id=6816644117

It is now:

http://www.facebook.com/pages/Im-On-Facebook—Now-What/6816644117

This appears to apply only to public-facing Facebook Pages, and not User Profiles or Application About Pages (which are also supposed to be public). Thinking back on this, I don’t know why it took them so long – this is a very easy server configuration that makes a very large difference in search engine ranking. Will they do the same with other public facing pages in Facebook?