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.

_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.