OK, I finally broke down and added one external app to my FaceBook profile: the Shared Google Reader viewer.
Until now, I’ve been hesitant to add any of them, because most (that I’ve seen) don’t do much of anything useful and just end up taking up time, and from what I understand (could be wrong) about the FB platform,you may be opening your account up to more attack vectors with each new app you install.
Of course, it will be just my luck that this Google Reader one will turn out to have some kind of exploit, but until then, you can use it to see all the stuff I mark as “shared” while I’m reading my RSS feeds. If you’d rather just see that directly (outside of Facebook), you can always go to my Google Reader Shared page directly, or subscribe to the feed of my shared items from that page.