A quick note on tagging:
Tags should be keywords separated by commas.
If you look at the tag cloud on the right hand side, you will see that a number of tags are just long strings of words. If you have done this in the past, here's how to correct them:
When you are typing in a tag/keyword, after you type a few letters, the interface will show you the tag choices in the system so that you can select an appropriate one.
Tagging is only useful as long as the community converges on a set of useful tags like "creative_commons" or "science fiction".
I have noticed some interesting trends (and the potential for more) emerging here on Oort-Cloud.org. Here is a brief rundown.
First, there is the use of various "fiction" tags, regarding which a "nonfiction" tag would be equally useful.
Second, I have seen someone post something that is a discussion item with a title that begins "Discussion: " and the tag "discussion". Similarly, one might post a review with a title of "Review: " and the tag "review", or "Fiction: " and "fiction".
This a useful idea for a number of reasons: