Yet another scam - this time concerning Facebook?

A couple of friends of mine have had their Facebook accounts hijacked and wondered how it had happened.   Today I have had two emails telling me that my Facebook account has been logged onto from a new browser in a location miles from where I am and asking me to confirm this was me.
When I clicked on the link, there was a box asking me to insert my FB email and password.  This is clearly how hijackers appear to be getting access to accounts.  Be Aware.  If you have responded to such a request, change your password immediately before anyone can gain access to your posts, friends and info.