My tags are not numerous, they are pretty simple. Most of them are made for my Sony. Oh I did make another column for extra tags that I can use and not mess up the Sony collections. In the extra column I put things like Amazon, library, or anything else I want. In the official "tags" column I have things like:
1 - 1st in series
2 - next in series
Anderson. Evangeline
3 - SFR
4 - 1st in series MM
....etc. I have a few author collection tags, most are series or genre. Then the Sony takes and makes collections using the tags as collection names. I put the numbers in so they will show up on the first page or two.
I've got to look into making my tags better for Mantano on the Fire. I haven't really explored using them that way. As long as it doesn't mess up my Sony tags