input: [Category] Performance data [Purpose] This is the traffic source cookie. It contains all of the traffic source information for the current visit, if it was different from the previous visit. If no traffic source information can be found for the current visit, the cookie is not changed. This is the way that Google Analytics attributes visit information, including conversions and transactions to a traffic source. It does not contain historical information for previous sources. [1st party or 3rd party?] 3rd party [Lifespan] This is a persistent cookie with a catch: it expires in six months and is only refreshed when the traffic source changes. Every other cookie is refreshed with each pageview. The impact of this is that a banner ad that brings a visitor to your site will get the credit for all future direct visits for up to six months. After six months, if there have not been visits from any other source, the cookie will expire and start to attribute information to direct visits. [Cookie Name/ID] 
output: __utmz
options: _ _ u t m a
options: _ _ u t m b
options: _ _ u t m c
options: _ _ u t m z
options: _ _ u t m v
options: f o r u m _ c o o k i e _ A B C D