Privacy is <i>complicated</i>
If you walk in the street, anybody who sees you can blog about it. There is at the moment no expectation of privacy about it. However, it is almost certainly illegal to set up a web site tracking the movements of people in the street. Where is the limit? I will quote in full this excellent paragraph from Simon Bell:
"Tax is too complex and too intimately tied up with subjective political ideas about the size and role of the state for it to be reasonable to expect people to be guided by their conscience. That is why we have law. If the government doesn't like the outcome of current tax law, then it should change it."
In fact, I fully expect the expression "privacy code" to become part of the political vocabulary — You saw it here first!