Over at Ask Ubuntu meta, I posted a question regarding new users.
My experience is that there are many new users coming in that don't understand the difference between SE sites and a forum.
There are some really good points made in the above thread, but one suggestion was a timeout period (similar to what exists on Ubuntu Discourse), where a user can't post anything until after they have visited the site for a period of time (let's say 1-3 days).
In my opinion, this solution could handle several issues in one:
- New users are "forced" to take some more time browsing the site, seeing examples and learning the site rules.
- Many new questions are duplicates. A timeout period forces new users to search existing questions, and see if their problem is already answered.
- New users can't use this site for "HELP, I have an exam tomorrow, and I need my computer fixed now, PLZ" kind of questions, which we unfortunately see on Ask Ubuntu.
- Users can't create multiple users and post their questions several times with different users, which is something we unfortunately also see from time to time.
IMO, the issues you ask about at SE sites aren't the type where you should be in a rush. If you're in a hurry, call a professional. Instead, SE sites are more suited to well-thought out questions, and well-considered answers.
In this light, I think a timeout period of a couple of days wouldn't hinder the usefulness of the site - on the contrary.