From Svendsen Tech Powershell Wiki
We allow third-party companies, including AddThis, to collect certain anonymous information when you visit our website. These companies may use non-personally identifiable information during your visits to this and other websites in order to provide advertisements about goods and services likely to be of greater interest to you. These companies typically use a cookie or a third party web beacon to collect this information. To learn more about this behavioral advertising practice, you can visit http://www.networkadvertising.org.