The basic idea behind Twitter Places is to allow users to truly assess the validity of other peoples’ tweet. Are you really where you say you are? Are you lying? Here is what Twitter said in its official blog.

If you’re like everyone at the Twitter office, you’re going crazy about the World Cup. When turning to Twitter to keep up with the current game, it helps to know where a Tweet is coming from—is that person watching the game on TV or is he actually in the stadium? To help answer that question, we’re excited to announce Twitter Places on twitter.com and mobile.twitter.com. Starting today, you can tag Tweets with specific places, including all World Cup stadiums in South Africa, and create new Twitter Places. You can also click a Twitter Place within a Tweet to see recent Tweets from a particular location. Try it out during the next match—you will be able to see Tweets coming from the stadium.

My thoughts are that, yes, most people are lying. But now we can watch you, oh liars, and we know where you live.