Originally Posted by Lady Fitzgerald
It wouldn't be hard (albeit time consuming as all get out) to go into the tag editor, find groups of similar tags, and rename them with a common name.
Whenever I did this, I found myself throwing away data. Should I combine English Fiction with Modern English Fiction? Do I really want to study the first book to see if it's "Modern" just to add the tag from the second?
I really think the best solution is to keep all the tags, and then add your own. That's what I'm doing now. If you want to make them easy to search, put your consistently applied tags into a separate column.