Setting your FB account to use HTTPS does make data you send through FB more secure.
What you lose are features like the 'Chat' messaging, games, apps etc.
I use 'Chat' a lot so don't bother using HTTPS.
HTTPS won't make a blind bit of difference on FB if you post your going on holiday in May 2012,
or you mention your street, or your new car, or worse, photo's.
A friend of mine once posted a picture of his brand new car on an internet forum, proud, new car.
I reminded him that other members knew what area he lived in. He removed the photo.
Basically, there's a lot of scaremongering on FB, but I think common sense is best used.
IMHO
