First Facebook and now Instagram have changed their algorithms and marketers must keep up or will lose traction and reach with their consumers. Instagram has more than 400 million monthly users. Now that the general population can advertise on Instagram, it is adding an algorithm that reorders pictures into feeds. With this new change, if you're not going to spend money, you had better make sure you have great content and a strategic plan in place. It's still not exactly clear how Instagram will push which posts into feeds. But one can assume it will be based on interests and perhaps location. Many Instagram users are not happy and are voicing their discontent, but most marketers saw this coming and have adjusted accordingly.