Hello, I feel ability to combine/merge tags and categories with each other, built-in WordPress function would be very useful.
Many newbies often don't use tags and categories in a right way, so after some time they end up with a lot of same meaning tags and categories.
That's bad for user experience and site navigation, plus adds up additional information to database and makes site heavier.
There isn't even a third-party plugin that can combine tags with tags or tags with categories, there are just few plugins which does no longer work or doesn't do it in a accurate and good way, creating even more mess.
I think that would be great addition to WordPress and would save a lot of time to many bloggers.
Thanks for attention :)
