1. AddThis tools set cookies as part of its user measurement and analytics features. These cookies are set on the .addthis.com domain, and include:
- uid - Uniquely assigned machine-generated user ID
- di/dt - Maintenance cookies that help manage expiration for other cookies
- bt - User interest modeling
- uvc - Measures how often we see an AddThis user
- ssc/psc/uvc - These cookies are used in recording user sharing and social activity
- loc - Geolocation, used to help publishers know approximately where people sharing information are located. (State level)
2. The AddThis website sets its own cookies. These cookies include cookies set by the analytics and other third party packages we ourselves use, such as Google Analytics, as well as those set for functional purposes as part of console login, for example. These cookies are set on www.addthis.com and do not affect your own site or visitors.
- uss/ups - Used to record user-specified sharing preferences
- ssh/sshs - Used for optimizing sharing settings for the user.
- dbm - User preferences on whether to see toolbar download options
4. The AddThis tools also, in some circumstances, set cookies on the first-party website domain much like Google Analytics and other packages do. These cookies are used for per-site user preferences and analytics, and are always preceded with an underscore.
5. Finally, the AddThis tools may expose visitors to various advertising partners, who may in turn set cookies themselves. Any cookies delivered in this way will only be set on the partner's domain.
For more information on how these practices relate to our privacy features, advertising offerings, and user opt-out, see our What you Should Know page.
Note that there are some additional exceptions to the cookie behavior described here, including when AddThis is in use on cookie-restricted properties such as .gov and .mil domains. For more information, feel free to ask us.
This question has received the maximum number of answers.