The yinzer version of Instagram: Yinztagram. If you’re on Twitter, then you already know about it. That’s where the free iPhone app (created by Matthew Pegula in about 10 hours over the weekend) exploded yesterday. The gist: take a picture of yourself on your smartphone and slap a bit of Pittsburgh culture on it before zapping it to your friends or posting it on your social networks. Share a cold one with Rick Sebak at a Steelers Bar, place an incline cable car in flat parts of the city, or a huge Primanti’s sammich in Sidney Crosby’s mouth! The fun is endless.