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PSA: Lemmy votes can be manipulated
(feddit.nl)
A community dedicated to fediverse news and discussion.
Fediverse is a portmanteau of "federation" and "universe".
Getting started on Fediverse;
No need to make all federation under a whitelist. It's enough to ignore votes from suspicious instances or reduce their weight.
Depends if the rate of creation of the suspicious instances is higher than the mods can manage.
New instances would have a lower voting weight by default.