Discovered this morning that Maven https://heymaven.com (a social media startup who's CEO is ex OpenAI "Ken Stanley: leading the Open-Endedness Team at OpenAI") is mass importing public posts from the #fediverse with no links back to the original and no way to delete them. It seems there is no Opt-out or Opt-in mechanism at all. It also has posts from #Bluesky pulled in via @bsky.brid.gy that are also not linked back to the original.
Here's an example: https://app.heymaven.com/profile/66927
1.12 million fediverse posts scraped by AI startup Maven founded by ex OpenAI lead...
confirmation by Maven CTO Jimmy Secretan https://app.heymaven.com/discover/1190743
hate it.
for the record, I emailed [email protected] when I saw your post and checked out their T&Cs. I informed him that he was violating my content licensing by scraping the toot-lab and gave him a reference link to my shadow profile on their service, and that if they persisted in misusing my posts I'd have to look at legal remedies, and he just replied and said he has "removed the data and will work this week to prevent future ingestion. Thanks and sorry for the inconvenience."
so, super annoying and mega-manual opt-out process, but the profile page pretending to be me is indeed now removed.
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DJ Sundog
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Esther Payne 
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The Nexus of Privacy