Facebook is Crawlable?

Google is making a push to help AJAX applications (Websites/apps that are normally not very friendly to Google's search engine) act more like regular sites which are easily crawlable/indexable/etc.

http://googlewebmastercentral.blogspot.com/2009/10/proposal-for-making-ajax-crawlable.html

You can tell a search engine (the indexer/crawler) that your AJAX app does adhere to these new standards by putting a "#!" in the URL.

I haven't looked very far into this but Facebook uses this (http://www.facebook.com/#!/ashtonthomas)
which makes me wonder why my facebook profile should be crawlable by search engines.