Let me cite the exact rule and why the account was banned, because I think this should be made
very clear to avoid any complaints.
Incentivizing posting via low effort tasks (likes, follows, etc.) is NOT allowedIncentivizing posting within one or several threads via low effort tasks (e.g. signups or proof of participation for liking, following, subscribing, retweeting, tweeting a single tweet, joining a channel or group, etc.) is not allowed
Thus, something like #joined is not allowed. When you ask for more than that (i.e. tasks that require more effort than copying & pasting one's username/address/etc) then it is allowed:
Accepting signups or requiring proof of participation for tasks requiring substantial effort (e.g. signature campaign signups, weekly social media campaign reports, media (videos, images, articles, etc.) bounty signups, etc.) via a thread posted in Bounties (Altcoins) is allowed though.
Reports are allowed, though I believe every manager should go with either a form and/or making participants edit reports as opposed to quoting them.
I understand the reason one might want quoted reports (i.e. bounty thread being bumped) but that means having the board be even more overloaded.