~ I am surprised by some of the names that got banned though, several of them were good posters.
However administrators do not pay much attention to this
problem for some reason.
It's most likely that theymos don't want to change how the things are. It is possible to get unbanned but it's unlikely to happen,you need to have strong evidence and good reputation.
One nice quote discussing the iamnotback ban, but also a bit of theymos' view of the forum and regulations.
I don't want to edit the quote so here is the full comment.
He has several accounts all banned for ban evasion. It seems that the underlying offense which caused him to initially get into trouble (and often the thing which causes his alts to get noticed) is excessive multi-posting. But when he was warned and/or temporarily banned for this minor thing, he kept evading his bans. This forum cannot operate unless its few rules are followed, so ignoring the warnings and temporary bans that you receive and continuing to do the same stuff is unacceptable. People who do so are not welcome here.
His bans will not automatically expire, and any future alts we see from him will be permabanned. I may manually reconsider his ban if he promises to actually try not to break forum rules. The rules are not meant to silence anyone, but to keep the forum usable and fair. When someone multi-posts excessively, it monopolizes a thread in a way which harms everyone else's ability to communicate. Based on his posts in this thread, I think that he will just continue to break rules if unbanned, so I will not unban him at this time.
bitcointalk.org is not a normal for-profit company. Even if banning iamnotback somehow stopped all future ad revenue, he would still be banned, since his rule-breaking is disrupting the forum's mission of hosting free discussion of Bitcoin and related topics. (As explained above, "free discussion" is not "unmoderated discussion".) Similarly, I would welcome effective competition from decentralized forums, and I would be thrilled to be able to shut down bitcointalk.org in favor of a better-in-all-ways decentralized alternative. But although decentralized forums have existed for a long time (eg. Freenet's FMS is almost exactly what iamnotback keeps describing, and has existed since before Bitcoin), they have unfortunately not been widely used since the era of the semi-decentralized Usenet system, mainly due to vastly inferior usability.