Third party widget that presents a selection of social sharing links to users and also provides publishers with in-depth analytics
__atuvc stores an updated page share count
__atuvs displays counter to user if page is shared with the selected social-sharing service
b2 records visited pages in a site in order to recommend other pages in that site
loc Geolocation, which is used to help providers determine how users who share information with each other are geographically located (state level).
uvc Records how often AddThis encounters the same user IP address