If it is spam, it is policy to remove those posts. Otherwise, who are we to decide what content should or should not remain on the site? Blatant derailers will be infracted and subsequently banned for offenses, but the posts will remain unless it is spam.
If the majority of the userbase reasonably wants derailing and/or shit posts removed then that in itself is enough reason. You can of course ignore the userbase' reasonable requests, but the internet is littered with enough failed Totse clones to illustrate why that is foolish in the long run.
We keep it there mostly out of proof that the person has committed an offense ...
NIMF.
You see, if someone's already seen and responded to a derailing, the damage is already done. Removing posts en masse that were responding to the derailing isn't going to help the issue either. The best that can be done as a mod is to infract the person who started it all and move on. Also, it's not that hard at all to bring a conversation back on topic anyway. In fact, it is more preferable to naturally bring it back on course than to jarringly start removing a bunch of posts.
...but also because other people might have responded to the derailment/quoted it and it reads wrong when you remove the offending post.
NIMF.
If post removal is done well and in a timely fashion, people who click on the thread title will find the thread content and thread title actually relate to each other. People who've derailed, and by that I do
not mean 'conversational meandering' but
completely irrelevant commentary and/or shitposting, can continue their discussion in NIMF. No one gets seriously 'jarred' unless the post-excision is done by an autistic wielding a meat cleaver.
This was the purpose of the NIMF forum on Totse and when sensibly used the system worked well.
If the mods start pulling threads apart whenever there's an off-topic post made we really run that risk of micromanaging and possibly overstepping our bounds, which some other members mentioned as concerns. Post removal might have its place, but we would do well to approach it very mindfully.
E' has raised an excellent point. Assume the majority of the userbase reasonably request that blatant thread derails/shitposts are moved to NIMF, and Arnox gives the the mods the authority to carry out this task. The question then becomes; would every member of the team be able to reliably perform that task with competence?
Given the extremely selective and character-based criteria by which Arnox picks his unimpeachable staff and barring the occasional honest human error, the answer to that question is surely... yes.
Or have I missed something, Equanimity?