The well-known video-game tracking website Steam Spy will be shutting down after Valve announced changes to Steam's privacy settings. The specific change that has affected Steam Spy's operations is the default hiding of a user's game library. Steam Spy scraped data from public profiles on the software distribution platform to estimate overall game sales.
https://www.notebookcheck.net/Steam-Spy-ceases-operations-due-to-privacy-changes-made-by-Valve.296916.0.html