I have a links sideblog that has not it's flavor, I am thinking about evolving it into a blogmarks type of "thing", and creating a list of tags, similar to technorati tags. Now that would be somewhat difficult with my currect setup because everytime I want to post stuff with a "different" tag I would have to create a new category. Is there another way of doing it.

And since we are one the subject, is there a script that generates a tags list, similar to technorati, putting categories in bigger font-size based on the number of entries under them? Anyone?

http://www.elise.com/mt/archives/000526mak...or_linkblog.php

See this great thread on how to do tags using keywords - scroll down the article a bit to see how you can integrate them with Technorati if you wish.

See how to make a tag cloud from Al-Muhajabah for an answer to your second question.