The CCPA requires businesses that “sell” personal information, as the term “sell” is defined under the CCPA, to provide an opt-out from such “sales.” Some people have taken the position that when a website or app uses third-party cookies and similar technology for its own analytics or advertising purposes, the website/app is engaged in a “sale” under the CCPA if the third parties have some ability to use, disclose or retain the data to improve their service or to take steps beyond the most narrowly drawn bounds of merely providing their service to the website/app. Some take this position even when the website/app pays the third party (not vice versa), and in most cases merely provides the third party with an opportunity to collect data directly, instead of sending a copy of personal information to the third party. If you take the position that any of those relationships involve a “sale” within the meaning of the CCPA, then you may consider Flickr to have “sold” what the CCPA calls “identifiers” (like IP addresses), “internet or other electronic network activity information” (like information regarding an individual’s browsing interactions on Flickr.com), and “commercial information” (like the fact that a browser visited a particular page on our website) to those sorts of companies.