As far as I know, Facebook does not have feeds on items that relates to you or your friends because they want you to authenticate yourself and make sure that this information will only be available to those that are authorized to see it.
I know a lot of users want to have feed access to this data, so I hope they'll support some of the more generic protocols to do that without giving your user name and password.
I, personally, would also like to have most of the Facebook data available through feeds.
The problem of Facebook with feeds, aside from the security and privacy issues, is that it will mean less people will actually get to the site, which means less possibilities for monetizations.
Although I do think that they could probably do the same advertising things (the Flyers thingy) inside the feeds as well since they know which user requested which feed.