I know that people have the right to create several accounts, but is it allowed to join different signature campaigns using alt account? or Appling using more than one account?
I quite often tell newbies who make accusations against someone, don't accuse other users/Alt based on (post, transaction, language, country), it is not legal proof to say someone blah, blah, blah and try to use main account when accusing, if the evidence is valid, reasonable and acceptable, all is well, fair to both accuser and accused.
Cheating in campaigns most managers forbid it, still managers need valid proof to mark them.
More can be added.
Pour it here, we want to see it, the best example is here:
https://bitcointalk.org/index.php?topic=5394559.0, in cheating Alt actions in campaigns.