With the new additions, Twitter’s ad targeting mechanisms now include:

1. Interest: 350 fine-grained interest categories such as car racing or bird-watching.
2. Platform: Apps and web access on specific families of devices, such as iOS or Android.
3. Fans of specific Twitter handles: People who are similar to those who follow @ESPN, for example.
4. Gender: Choose male or female, which Twitter guesses but does not guarantee.

Twitter is very carefully not saying that advertisers can specifically target @JustinBieber’s followers per se. Rather, the 140-character social news network is saying that you can target users who are similar to those who follow certain accounts.

That’s a smart distinction, because otherwise owners of popular Twitter handles could start to feel used, or even demand a piece of the action. But realistically, it’s going to help markets craft a very specific demographic to target on Twitter, and probably get a significant fraction of any particular Twitter users’s followers as well.

The new platform targeting mechanisms are huge, too.

Now app developers, for instance, can target iPhone and iPad users for their iOS apps or Android smartphone owners for their Android apps. In addition, advertisers can specify if they want only desktop and laptop computers, or BlackBerry users, or anyone on other mobile devices (Windows Phone, anyone?).

Gender targeting is a little tougher. Users don’t specify their sex on Twitter, so Twitter extrapolates gender by contextual signals like usernames, real names, and even the accounts Twitter users follow. According to Twitter, those signals are 90 percent accurate in determining gender reliably.

Twitter’s self-service platform has been in the hands of a small number of beta testers since last year, and these features were among the most requested, Twitter product manager Ravi Narasimhan said. The new features are going live to a larger but still limited audience now: U.S.-based businesses on a by-invitation basis only.

To access the new features, switch to Advanced in your Twitter ad dashboard if you’re already a customer, or request access at the Twitter Ads self-service site.

So is Samsung, apparently.

The Korean consumer electronics giant’s tempestuous legal relationship with Apple is well known, as the two companies fight for global dominance of the smartphone and tablet markets. But it doesn’t mean that Samsung can’t have any fun with it.

Just like this:

Samsung is teasing their big Super Bowl ad, of course, but it’s also poking a pretty big finger at an unmentionable competitor with rounded corners and a design language that it fiercely protects against all comers.

I wonder if Apple is amused?

photo credit: elviskennedy via photopin cc