I was thinking about a similar idea: as you start typing your tags, a
live query hits the server and tries to guess the tag you are adding,
and completes it for you. There is no doubt I need to revisit the
rCache Collector extension code in the near future. When your tags are
added to the database, the tag is checked for a duplicate tag (case
insensitive check), so you will not duplicate any tags.
I would like you to expand on this idea of viewing your tags in the
same "category". Do you mean you want to see your tags in clusters of
tags that are often used together?
Thanks for the feedback, this is my best source of what to do next.
David