Basically we're (ab)using Category to determine whether a post is a News post or a Blog post, and so it's not a category in the traditional sense to the outside world. I'd like the category to not be indexed by feed-readers/crawlers, only the tags.
I found an easy way to do it with an easy change to 1 function in the core, but I'd rather avoid that if possible.
Is there a way to do that without modifying core? (Specifically
EDIT: What I mean specifically is to not list the category in the feed. For example, this is what part the current RSS2 feed looks like:
<category><![CDATA[blog]]></category> <category><![CDATA[test]]></category> <category><![CDATA[testing]]></category> <category><![CDATA[yeah!]]></category>
"blog" is a Wordpress Category, while "test", "testing", and "yeah!" are Wordpress Tags.
What I want is to exclude the entry
<category><![CDATA[blog]]></category> entirely from the feed. The same should apply to Atom feeds and any others.