About 6 months ago I got this crazy idea of renouncing at categories and use just tags. Various reasons for this, mainly because a lot of categories needed to be created and I hated that.
So I started using tags. At the beginning it looked fine. But what about old posts without tags? How can I tag them? After some searches, I found an easy fix.
I used the Search and Replace plugin to add embed tags to key words like youtube and digg. I would simply go to the plugin, select only the content, main word youtube replaced by [tag]youtube[/tag]. I did this for all the important words. It is not a time effective technique, but it will pay in the end
Then I used Ultimate Tag Warrior’s feature of importing embed tags and i got all the tags i created before.
After this, i got a bunch of tags. And, because i don’t like embed tags (i think they are somehow confusing), i went to Search and Replace again and deleted [tag] and [/tag].
Be careful and backup your database before. Better safe than sorry.