If you run a consensus #blocklist I would suggest removing tenforward.social as a trusted source, recognizing that you are getting most of the same information from your other trusted sources (usually .art and r.l) as it is.
If you use them for _filtering_ (removal) purposes (you have a list and their list is simply used as a bias check) as opposed to additive purposes this of course doesn't apply.
If you manually review, please factor this in when you are doing that evaluation.
Note that this extends, though more weakly, to .art and r.l if they are sources for your blocklist: there's clear documentation right now of .art drawing their list directly from tenforward.social recommendations (via fediblock) without review or with only pro forma review, and r.l shares a moderator with .art (or did last I checked).
#blocklist