Facebook has been undertaking a massive attempt to expand into every corner of the internet, including elaborate links into hundreds of thousands of other sites including FT. There was a huge debate here a month ago about the big FB link at the top of our screens, and many of us instituted filters to block it.

One privacy option is to have different personas, different names and e-mail addresses for each social networking site, otherwise the bleedthrough will just increase as we ooze into the brave new future.