There’s a difference between the audience I follow on Twitter and the audience I follow on Facebook. I prefer following industry-specific people on Twitter (those who, like me, are in technology, startups, design, ux, etc…). And of those Twitter users, there are plenty that I would like to follow on Instagram. Instagram just announced that they’ve reached 80 million users and have shared 4 billion photos. But now, it looks like Twitter is limiting API use to those with userbases under x million. They’ve already cut off LinkedIn, now Instagram, and who knows what company is next?
So for now, if you’re looking to follow your Twitter friends on Instagram, you’ll need to either search for them manually in Instagram using the “Explore” tab (but there are problems with username consistency) or click on the Instagram link when your friend shares the image, click on the user name, and press the “Follow” button.