Leading up to May 2012 there was a lot of confusion about the legal requirements for giving cookie to Visitors (used by almost all sites to provide metrics on site traffic). This resulted in a number of different implementations providing a variety of user experiences.
The Information Commissioner’s Office (ICO) eventually provided clarity (http://bit.ly/ZzXyOW), but there are still sites today whose method of dealing with the regulations is overly intrusive. If you think you may be one of them, read on!
So, say goodbye to those large banners and irritating pop-ups!