Since the upcoming WordPress 2.3 release will debut the new tagging system, I thought I’d take some time to address what it means to use “tags” versus using “categories”. These things mean different things to different people, as it’s really just a matter of how you want to use them. But let’s examine what tags and categories are, how they are similar, how they are different, and why you might choose to use one system over the other, or use them together.
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Upgrade or else!
UPDATE 2008-04-16: Well crud. I was just re-reading the WP 2.5 announcement post for something else, and spotted a bit about security updates between 2.3.3 and 2.5. So my previous advice about 2.3.3 being okay was incorrect. This is one of the areas where I disagree with the core developement team — if it was up to me, there would be a 2.3.4 security release for those who have good reasons why they can’t upgrade to 2.5 right now.
Okay, people, if you are running any version of WordPress older than
2.3.32.5*, you need to upgrade now. [...]