a technical note on tagging
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".