Twitter wants to know your birthday so it can shower you with balloons and ads


Excerpt from this article:

Users who do fill out their birthdays can choose who sees the information, making the date either public, open to followers, or restricted to themselves only. But no matter the privacy level you set, Twitter will use the information for marketing purposes: a note in its support database confirms that the social network will use your birthday “to show you more relevant content, including ads.” By filling out your date of birth, you’re not only getting a screen full of balloons and more timely congratulatory tweets, but you’re making yourself an easier target for marketing.