2016-5-17 16:13 /
there have been discussions about present policy enforcing a tag in each question title.
inconveniences have been mentioned in situations such a tag is
too narrow when the actual scope is not limited  
too long
counterintuitive


[1]http://meta.stackexchange.com/questions/71906/first-tag-in-the-title-of-the-page-is-not-that-convenient
[2]http://meta.stackexchange.com/questions/72692/which-tag-is-added-to-the-page-title
you (as an author or editor) do have some control over this:
You get to pick which tags are used. This is fairly obvious, but if you're picking a tag that's incongruous with the title, you might want to pick a different one.
If you work the tag into the title "organically", it won't get prefixed. So, "How do I do X in Python?" won't have "Python - " prepended to it. So if you're just looking to put something more important near the start of the title, use this method to enforce it.
How about we allow the person writing the Question to specify the most important Tag... if they WANT to do so?
http://meta.stackexchange.com/questions/127370/should-we-stop-adding-the-most-popular-tag-to-the-html-title-on-every-se-site/127422#127422