Twitter and Buddy Media have partnered together to create a system that'll help brands and marketers screen the ages of their potential followers.
Naturally, this will allow such entities as beer companies to try and ensure that the followers they have are of the adult variety.
How it works is that a uses clicks to follow @[Insert Brand Here]. Once he does this, the brand will automatically send the individual a direct message with a link to age.twitter.com. Once at that site, he is asked to enter his age. If the user "meets the threshold set by the brand," he will automatically be allowed to follow it. If the user does not meet the age threshold that the brand has set for his given country, he won't be allowed to follow it.
Buddy Media says that this service can be of convenience to Twitter users, because once a person supplies his age through this process, he won't have to do so again if he chooses to follow other brands using this solution.
The service is up and running now, following a beta-testing period with Brown Forman's Jack Daniels, Jim Beam's Skinny Girl and other booze manufacturers.
Of course, people can always lie about their age in their Twitter account or through this service, so the likelihood of this being a totally foolproof solution (in my opinion) is slim.
Marketers can sign up for the service today through the aforementioned age.twitter.com Website.