Director, Wayback Machine at the Internet Archive.https://bsky.app/profile/mark.bsky.socialhttps://bsky.app/profile/mark.bsky.social/post/3m6poavftw22vLast week a CDC webpage about vaccine safety was edited. Using the "Changes" feature of the Wayback Machine we can see a "before and after" comparison: https://web.archive.org/web/diff/20251004184202/20251120191730/http://www.cdc.gov/vaccine-safety/about/autism.html The Internet Archive's Wayback Machine is the change control system the web never had.28 Nov 2025 19:58 +0000at://did:plc:56eu4dgnrcshzprop5allpta/app.bsky.feed.post/3m6poavftw22vhttps://bsky.app/profile/mark.bsky.social/post/3jmmis7lrxb2hHello Bluesky! It is great to be here. Greetings from Half Moon Bay, CA. 19 Jan 2023 01:16 +0000at://did:plc:56eu4dgnrcshzprop5allpta/app.bsky.feed.post/3jmmis7lrxb2h