Tagging - Method to the Madness

I've always viewed tagging for personal use, before delicious, that is. Delicious is the first application that I can see the use of having multiple eyes viewing it for a purpose. I agree with the idea that it's "less intrusive" than e-mailing everything that is interesting to you that you think might be interesting to others. My older tags in my edublog and flickr were very representative to the moment. WYSWYG - What you see is what you get was the method to the madness last year. I was very novice in the idea of tagging, not truly understanding the idea BEHIND the purpose, but this year I'm getting a clearer idea of how it can be used effectively. When thinking about going to refine my tags, I'm having a hard time. Only the idea of a broader tag seems like the only revision. Such as the tags as "BATH" also having the tag of "VACATION" or dating it "2006." I realized that I was very specific, but didn't think of the basic labels that people may search under. For example, I have a picture of the Gin in Plymouth, England. I labeled Gin, Plymouth, and England...basic right? But not SIMPLE! SO I went back and included Barbican, and street. Trying to think about my iImage and what basic search terms while I had a sense of what I was looking for already is helping me refine my tags.