Big 20: Walled Garden
Twenty years ago, the internet was a wide open frontier where any individual could create a presence online and any other person could find and see it. Most people did not have the time and patience to build a website. Social media took over that burden but for a price. They created walled gardens that told people what they wanted them to hear. The serendipity of discovering something you were not calculated to know is disappearing. The frontier is closing.
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