74924d39_Cookie_Policy___48__What_do_we_use_it_for_
[Cookie Name] __utmc [What do we use it for?] 
We use this cookie to count and measure “user sessions” – that is, individual visits to our site, which may include several different pages or areas of the site. If you don’t do anything for 30 minutes, this cookie expires and a new cookie is set when you begin using the site again.
Cookie Policy | 48
What do we use it for?