Facebook – Finding Facebook profile ID by analyzing the image URL hosted at Akamai

What facebook uses is called oEmbed - there is an oEmbed plugin for wordpress, and it shouldn't be super hard to create one for blogger.

In addition, if you need more than the sites that officially support oEmbed, you can try oohEmbed, which supports a very long list of sites.

The settings are still there when you post.

In the case below I have a list called Locked and I allow everyone except those in that list.

You can always edit this by clicking on it.

From there the same way that you will reference a friend, is the same way you would reference a list. Just type the list name. Below I used it in the hide list, but you could do the same with "Make this visible to" , just select "Specific People"

So you could say the "These people" could have been a bit more descriptive and said "These people and lists"

For older posts there is a little lock icon that shows the privacy settings for that particular item.