From now on, you may happen to notice Instagram photos appearing oddly on Twitter. Some images may appear cropped or somewhat off. This is not a bug. It’s because Instagram doesn’t want to play nice with Twitter anymore. In a post to Twitter’s status blog on Wednesday morning, the company notified users that Instagram has disabled its integration with Twitter Cards, the technology Twitter uses to display multimedia inside of tweets on the service. In practice, Instagram photos will look bad on Twitter. But in effect, it’s Instagram giving Twitter the middle finger, a clear sign of the photo-sharing service making plain that it no longer wants Twitter to ride on the successful coattails of the millions of photos Instagram hosts on its service every single day.