No. The currency point clearly states that you are paying for a service, but you don't know by how much. Maybe that old painting in the attic didn't seem to be worth a lot, so you should it at a yard sale for $5, only later to find out it was worth millions. Maybe you thought your privacy had low value and traded it for online services, only to find out, you could have asked for so much more.

The article claims that you are working for free to make facebook money (which - at least to me - implies you deserve a kick back).

The bridge example is to show that things not being used are always worthless, so saying that Facebook only has value because of its users is a pointless statement. A bridge not being crossed is also worthless.

you don't know you're paying for it when you walk across a bridge?