http://ec.europa.eu/justice_home/fsj/privacy/
Here is it all. Due to being a company holder, I have to follow the standards more strictly than private fellows, but this is also changing soon. Failing to adhere to the rules may result into severe fines, reaching, as far as I rember, up to €30.000,00 and 5 years of prison. This is the main reason why, since the law became active, european spammers have become so rare. The laws regard "user accounts" and "sensitive data" in general.
In order to publish a forum, we are also forced to show a
privacy statement, similar to the one you find on my site. To be exact, it should be in the language of the country in which the site is hosted. Since my site addresses mainly international visitors, my personal "free" license was to publish just one in English.
With ongoing legislation, it is probable that forum owners may be only company owners or members of Journalism Guilds, as well.