A lawyer client of mine phone with a very serious concern.
He does not have a Facebook account and does not like or is resistant to social networking.
He receive a formal looking email from his brother, which leads him to believe it was an automated Facebook notice that he received after his brother invited him to join Facebook, it said something like: " you may be interested in joining to view photos, etc."
All of that is quite fine so far, no problems.
However, although he made no attempt to join as he is very disinterested, the invitation email showed him 6 pictures and their associated names of clients of his, who are already on Facebook. The problem is, his brother would not have known these people what so ever, they are contacts of his who are scattered around the world, and he himself made no attempt to join up.
His considerable concern as a lawyer, is how did Facebook know that these members were friends of his. In other words did face book harvest information such as email addresses from his hard drive without him being a member, without him authorising them to do so, and without him being aware.
He feels that if they can harvest confidential information regarding his clients that it is a huge concern.