Denise, tags are also a good way to find the design you want to vote for. It's much easier to find designs through tags, than to wade through 59 pages of mixed designs! (Wow, that's a lot of designs, and they're all fantastic, thanks Cute.) You just find the tag that describes that super design that you really, really want to be tomorrows freebie, and vote for it. I've sent you a flower, have fun with the tags.
tags are words that are used as clues to find your designs if you can't remember the file name. For example halloween221107 might be difficult to remember what it is, but would hint that it is relating to halloween. If you looked at it and it was a witch on a broom flying over a full moon, the "tags" you might give it could be: moon, witch,halloween. With some software, you can add tags to your design details and search by the tag names. On this site you can click on the halloween site and find the witch on the broomstick flying over the moon.