Dive summary:
- Most likely, your business already has a database of customer emails at your disposal; if that's the case, you can use the list to target your Facebook ads to just customers or prospects of your brand.
- Facebook's Custom Audiences allows ad buyers to upload a customer list; Facebook then matches the email addresses to users so they will see that brand's ads, even if they are not a 'fan.'
- Every list is hashed (summarizing text into a short fingerprint that cannot be decrypted) before it is sent to Facebook—meaning that the data stays in each prospective server, helping to eliminate privacy concerns.
From the article:
"Not all of the email addresses you collect are directly related to an email address of a Facebook user. Facebook tends to match up between 30-50% (sometimes more, sometimes less), depending on the quality of your list."
