This is all just Facebook "testing the waters" to see how much it can push its users to extract money from them without them leaving.
in the next 6 months to a year or so...you will begin to see Facebook charging $1 to message anyone...if they are on your friends list or not...and of course..95% of the Facebook user base will gladly just bend over and take this one.
I haven't had a Facebook account in nearly 3 years, and i don't miss it....don't need it.
I talk to more people now without Facebook then i ever did when I had it...so its a win-win for me!