Recently, when I logged-on to Facebook.com, I was given an info box on the top saying that the way Facebook deals with security has changed (yet again!). I saw a couple of malfunctions and a lot of BS hence, wanted to document it.
I believe FB has made my account more open and public. I think the reason is that the race now is after the real time search and indexing. Since, Google et al. have started to put some real time search results from Twitter feed (I think FB also), FB esp. has aggressively started a campaign to make as much info on your wall, feeds, account public as possible.
This is what they have to say on FB Information about Your Recent Activity on your wall. (…and it sounds Satanic).
Also, when I tried to control my settings, to my surprise all of the options in sharing were checked. I, as a good user, chose the option they gave me: “Keep all the previous settings”, as I did not wish to change my privacy settings. So, you have to take a look at this screenshot to see what they did.

FB tells you to keep all the previous settings, but they do not keep their promise. Everything on the list is checked. Wow! Those were NOT my previous settings.
In other words, I am extremely angry and IMHO you should be too. Although, I was really disappointed by Facebook’s but then I logged on to Orkut.com and saw this:

Orkut is Google's never-ending joke.
Look at the pink circular-band. It looks like an AIDS or breast-cancer relief campaign more than a Social Network and it sucks.