I'm very sorry if this is duplication, but I can't find a mention of anything like this anywhere yet. It seems like it might even be a little obvious.
From How to use version specific tags? question's answer I got the idea of when to use version specific tags. But most of the people don't know that. Being a ruby on rails developer. I have seen lot of people using ruby-on-rails-3 on their questions not ruby-on-rails.
Can't we show a warning to users while posting a question in case they don't add generic tag for the same.
A warning like:
"You are adding ruby-on-rails-3 not ruby-on-rails. It will be great that you analyse your question again and add proper required tags"
Let me know if you guys have planned something else or will love to know better ideas to solve this problem.