>>Valuable for blackmail, but not really useful
>>for anything else; the commercial value of
>>information rapidly degrades over time.
>>Knowing I want to buy a new fridge today is very
>>valuable, knowing I wanted to buy one last month is >>nearly worthless.
I think that blackmail is already bad enough. Considering which topics somebody might want to learn about on the internet, various diseases for example.
>>I hope that ISPs do not release personal
>>identity or billing data to arbitrary third parties.
I hope that too. But this information is gathered and stored somewhere in flawed systems which are operated by humans which might decide to follow their own interests more than the interests of the customers. I know of at least one story where an employee of a search engine has been using his privileges to stalk other people.
