Sorry but I hope the graph I posted has been taken seriously - it wasn't meant to be - I found it among a collection of other spoof charts.
I too have used facebook - honestly - and have been in contact with a few people (as you say probably some selective care is needed).
On a somewhat separate thread, there was an interesting programme on TV recently that debated the open nature of the World Wide Web and the amount of personal information often freely provided on networks by individuals, many not realising there is every probability that it will remain there for others to see for decades to come. So, while I don't want to seem like a person that looks for the negative side in everything, I remain cautious about putting too many personal details on the Internet.
