Usually, the content of the posts isn't the problem. Lack of civility or, for lack of a more polite term, acting like an ass towards others is the most common cause of a ban. Usually, bans are preceded by warnings.
I hang out on a few other sites, where the tolerance levels of outright attacks are generally 100x of what they are here, much less over on THR.
Never the less, useful conversations(for the point of the board), still take place. Threads do get locked, but usually less frequently than on THR or APS. The biggest ban rate is stomping on the advertising trolls who register for an account to push some product. They get banned & their posts deleted.
Now, they do sometimes hand out two-week to month long bans. They also hand out 72 hour bans like candy. When a long-time user gets permabanned, everybody knows why. Everybody. The situation on THR lately seems too 'knives in the night' to me lately.
I too can be a radical hothead, though I try to avoid insulting people personally, or use bad language. The way I look at it, insulting people is just asking for them to close their ears, and bad language is just that. I have enough trouble with my spelling and grammar, mixing in gratuitous four letter words doesn't help.
