We maintain the information we collect through our Services in non-aggregated form for a period of not more than 13 months. This data includes Sites visited, content viewed, ad interactions, IP addresses, browser type and language settings. We maintain this information for the 13-month period to enable our clients to perform year-over-year analyses. For example, a retailer may wish to compare the effectiveness of its online advertising activities at Christmas for the current year vs. the effectiveness in the prior year. A 13-month retention period enables that client to perform such comparison.
We maintain information we collect through our Services in an aggregated form for a period longer than 13 months.