Hi Gals!
Well, I’ve tagged thousands of files now and it’s like Christmas all over again. I’ve seen stuff that I had long since forgotten about! I’ve also learned a few things that may be helpful as you journey through your own tagging.
1 – I mentioned before that choosing to display your keyword with the thumbnail was pretty cool; well, I’ve determined it’s more than cool. It’s almost necessary. When I said that about 30% of the time I got an error message that the keyword wasn’t written, well it wasn’t. It looked like it was but when I switched on the keyword view, it proved me wrong. What happened? I moved too fast to the next folder. Having the keywords visible with the thumbnail gives me a visual cue that Bridge is done writing to the files, and only then should I move on. So…take your time. ☺
*Refer to an earlier comment for how to turn on the keyword view with the thumbnail.
2 – You can’t write to brush, style, pattern, etc. files that are used by Photoshop. What you can do, however, is create a keyword for each and tag its preview, where available.
3 – When you think you’re done, do a ‘Find’ search and look for all files without any keywords in your specified folder. You may be surprised to find a few files that you missed. What you will find, for sure, are those files I mentioned earlier that won’t accept keywords.
4 – If you come across a locked file, it won’t accept a keyword. Just right-click to unlock it and try again.
5 – There are inevitably those files that don’t fit into any of your categories. Katie’s Googly Eyes, for example!

I created a miscellaneous file for those and was surprised to find how many ‘stars’ I have. So going back to the misc folder and retagging some files may prove useful.
I figure that I’m about half-way done tagging all of my stash and I’m totally stoked at the results! I hope this helps some of you out there as much as its helped me!!!
Happy Scrapping!