Something needs to be done, but until theymos figures out what to do just report the posts for the time being. I feel sorry for any of the moderators that have to deal with this nonsense and the amount of reports that come from these but, we can't simply ignore it. Limitations/restrictions likely need to be put into place or if the thread is inviting poor quality posts like the ones quoted above possibly the topic should just be scrapped and the OP warned. I've seen a few people doing self moderated threads which is a step in the right direction but, even then it doesn't seem like they are actively dealing with it.
I'm not even sure what restrictions would actually prevent this that wouldn't hinder a legitimate user. I've seen in the past that a few people have suggested requiring the OPs to pay a fee to post a thread in the section, but that wouldn't even deal with the problem as the problem is the amount of new accounts being created to bump the threads or in some instances higher ranked members being paid to bump the service.
I understand that reporting them is like fighting a losing battle as there's simply not enough manpower to deal with the amount of spam that's happening in that section but, it's got to make it at least a little bit better for the people who are genuinely interested in altcoins/ICOs.
If we are specifically talking about project owners hiring members to bump the topics by making it look like legitimate conversations then this is not something we can prevent. Like you said this happens off site via telegram or what ever and can't be moderated. I will say though that these accounts are normally easily identifiable and I keep a private list of people I keep an eye on if I suspect them of doing this and then will report them if it's 100% that they are. I've been messaged by mods telling me exactly what happended to them and they are normally permanently banned and with the new merit system that's been introduced eventually we should be able to identify these accounts and be able to ban them completely. It will take time but, I can't see the types of people who actually do this bumping being able to farm their accounts with the new merit system.
True. One option is to ignore the altcoin announcement board altogether. That seems unfair to all the ICOs which respect the rules of this forum and get pushed down to the second and third pages.
Reporting or deleting individual posts doesn't seem to work because the ICO bumpers have a lot of accounts. The only solution which will slow them down is banning / nuking the accounts involved.
Although, it's currently being drowned out by the nonsense there is actually legitimate discussions going on in this section. From my observations airdrops and promise of free coins increase the likelihood of the thread being spammed. The mass majority of the accounts that are bumping the threads are low ranked, and nuking them isn't going to slow them down because they normally make one post on the account and then make another anyway. The higher ranked accounts should see harsh consequences if they are repeatably doing it which from my observations the moderators are handing out harsher penalties if the user has a history of this. Mention this in the report if the user is repeatably bumping or making nonsense replies.