There's another aspect to tagging your posts that hasn't been discussed in detail yet.
Tags aggregrate information written by many different authors. If you are thinking of tags in terms of your own SEO - your own self promotion - you may not have given this much thought. But if you are the one doing the "searching-for-information" thing, it is a real benefit.
For example, if I click "harry potter" in my tag list, I see I have two posts tagged "harry potter". Then, if I click the link marked "All member posts tagged with "harry potter""
I can see everything everyone has written about Harry, and tagged "harry potter":

So here's the thought for anyone writing tech tips, tutorials, etc.... We should all use the same tags when we're writing on the same subjects.
Another example, there is a large user group of Kodak V705 camera owners here. Many have written about it with tips, opinions, or questions. Most of the posts are tagged V705, a few are tagged Kodak V705. If you look at the tag list for V705, is does not include posts that were tagged Kodak V705.
Just my 2 cents.
So, I wonder, when I write about tagging, should I tag it "tagging". "tags" or something else?



Although I think your question may have been retorical, you should tag it with both. That way is listed and searchable under both terms. It feels loosely similar to having a long list of Google Ad Words to capture whatever people maybe searching by.
Happy Tagging! from one CJ to another
Hi Cheryl
I've been working on my tags & hadn't thought of this. Another good post. BTW I think your 2 cents are usually worth at least a nickle.
Howdy Cheryl
Thank you for posting some very fine information.
Have a good one