Birth, college attendance, employment, when you resided at a particular address, ZIP codes associated with open accounts—these are all numbers that can help a scam artist open the door to your identity by cracks and creaks.
As mentioned in the article, it's a good idea to avoid mentioning this information on social media sites like Facebook. If the website requires this information, you may want to consider providing it a false date. Just make sure you can remember the false date like a false birth date. The site may ask you for it as an extra security step when logging in.