Facebook doesn’t like competition and that’s why they are blocking Twitter photos from being embedded in their Instagram application.

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When the app’s users started to make complaints that they couldn’t view Instagram photos in Twitter cards. Twitter then confirmed that Instagram has been blocking them, “Users are experiencing issues with viewing Instagram photos on Twitter. Issues include cropped images. This is due to Instagram disabling its Twitter cards integration, and as a result, photos are being displayed using a pre-cards experience. So, when users click on Tweets with an Instagram link, photos appear cropped.”

What used to be a full image preview now shows badly cropped images. This also effects Twitter’s apps for smartphones and tablets.

This isn’t the first time Instagram has made efforts to toughen up competition. Last month they introduced profile pages to branch out onto the web. Twitter now wants to create their own special photo editing features program that will allow users to edit and enhance their favorite photos.

When Facebook Inc (NASDAQ:FB) acquired the popular Instagram app last summer, users were worried that the company would change it. The photo app’s chief executive officer, Kevin Systrom, then alleviated fears by saying, “Mark Zuckerberg originally said that Instagram would continue sharing to Twitter, that still is true today. Obviously, things change as a company evolves, and I don’t think we ever said nothing would change. We are always going to be improving the experience for users and we are always going to be making sure we evolve where we are. I want to make sure our users have the best experience.”

Facebook Inc (NASDAQ:FB)’s efforts to keep competition is a savvy move on their half, but the real question is what does Twitter plan to do next? It’s a good thing they have plans to create their own Instagram-like app but it shouldn’t stop there.