Magento Standard Cookies

• Cookie Name	Cookie Description
  USER_ALLOWED_SAVE_COOKIE	Indicates if a customer is allowed to use cookies.
  external_no_cache	A flag that indicates if caching is disabled.
  persistent_shopping_cart	The session key.
  Stf	If product links were sent to friends, stores the timestamps in the format: $timeStamp1, $timestamp2, ..., $timestampN.
  pollN	A poll ID that indicates if a vote has occurred.
  frontend	Session ID
  guest-view	Allows guests to edit their orders.

Google Analytics Cookies

• Cookie	Description
  _utma	Distinguishes users and sessions.
  _utmb	Determines new sessions/visits.
  _utmc	Determines if the user was in a new session/visit.
  _utmz	Stores the traffic source or campaign that explains how the user reached your site.