But could they be wrong?
What’s a cookie?
It’s a small text file that’s placed on a user’s computer or device that allows the server to display a page tailored to that specific user. For example, when you shop for shoes on Zappo’s and then go to another website to read an article, you’ll often see an ad on that page for the same shoes on Zappo’s that you just shopped. Zappo’s placed a cookie on your computer when you visited their site so they could later display ads that would appeal to you. Zappo’s cookie doesn’t collect any personally identifiable information about you, but they know that you liked a particular pair of shoes and they want to encourage you to buy them from Zappo’s.
If you get website visitors from Europe, you’re also subject to European Union laws regarding privacy – and they’re even more strict than California’s law. All commercial websites used by European citizens are required to notify users immediately that they place cookies on users’ devices and give the users a chance to opt out.