GM! In the case of Ihub, entire boards may be removed. There's no way to go through years of posts to selectively delete or re-write posts. The only solution will be to take down the entire site.
I hope you have backups of your favorite posts, because the end is in sight.
Perhaps a site like this is rich enough to hire an attorney to push back, but it depends whether they want to be bothered.
I don't post much online anymore, and this gives me incentive to limit posts to the bare minimum comment or level2 pic.
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If you take anything I say as advice, you're crazier than I am.