Jamie, I find that technorati doesn’t pick up my tags unless they are listed on the front page of my site…if I only list the tags on the post, technorati doesn’t see them for some reason.

2. I manually tag, I think tagging must be done manually to ensure accuracy and context

3. I think it helps, in terms of usability, if tags appear on the main page, I think the effectiveness is neither here nor there though. As long as they appear on the post page it should have no effect on the blog post in external applications.

4.I don’t really use anything.

2. I manually tag, although UTW allows you to pull the category as a tag automatically. I also use the Similar Posts plugin that automatically searches for keywords throughout and matches them with other articles with similar keywords, so in effect, it’s sort of like internal tagging.

3. Not sure about this. Perhaps someone with more experience can share their thoughts on this.

4. I use Ultimate Tag Warrior, although I presume when WP 2.3 is released, I’ll probably just use the built-in system.