1. from the horse's mouth, from the original or a trustworthy source. 2. hold one's horses, Informal. to be patient. 3. look a gift horse in the mouth, to be critical of a gift.
How old do you have to be on Facebook? According to Facebook's policies, you have to be at least 13 to have an account. If you lie about your age, your account will be shut down if you get caught, so it is best to â¦ adhere to the policies and wait until you are the age that is required.
The same approach can be used with most of the Facebook ads split tests you can think of. Instead of immediately testing 10 age ranges, why donât you first test if young users (13-40) will work better than older ones (40-65).