I think that one useful thing would be for beginners asking questions to make their threads self-moderating. They could then delete the spam posts,
Agree with it, but problem is most of newbie don't know about self moderated thread (IMO). I think I should make thread about it and explain benifits of selfmoderatrd thread to avoid spam. Or if there is others thread than it should be up.
This is what theymos said about the "
self-moderated thread" at the introduction.
In most sections, you now have the option of marking topics self-moderated when creating them. In self-moderated topics, the OP can delete replies. The option for enabling this is under "additional options". Topics cannot be converted to self-moderated topics after creation.
There are no rules to self-moderation. In self-moderated threads, replies belong to the OP. In other threads, replies belong to the respondents individually. Think carefully about whether you want to reply to a self-moderated topic, as your post may not be given due respect.
People who willing to start a
self-moderated thread, just put the tick for the self-moderated option under Additional options before posting.

AFAIK, the main advantage of self-moderated threads is you can have healthy conversations or discussions without getting diluted by spam posts.
The main disadvantage of the self-moderated threads is some people can use this as a tool for shutting down the opposite ideas or disagreement posts to the OP and giving false conclusions for other members(readers) by highlighting only the posts that agree with OP's opinion.
When I quoting theymos' reply it showing me
this message and is this newly added feature or is this the first time I have seen this warning message? BTW that's a very good feature. -
sorry for going somewhat off-topic OP