TIP: Since cookies are different for browsers, we recommend to have one browser for e.g. Facebook and the other for surfing the Internet. You may even top this by using a third one for your banking activities. Some browsers provide settings to delete all cookies when closed.
Internet Servers produce logs of what they are doing and what they are serving. This includes e.g. IP address, User Agent, Referrer etc. Those logs may be kept a few days or weeks for e.g. debugging and error corrections.
We will not share none-public data with third parties, except when forced on legal grounds.