No, not "tagging":
I mean tagging:
The upshot is that tagging content is fun and effective because it requires little decisionmaking.
People don't like making decisions. Decisions are committments. Decisions have implications. Decisions require mental energy that we would rather reserve for other things.
Witness the reduced selections on today's McDonald's menu boards. After years of menu expansion met only with declining sales, they concluded that people didn't actually look forward to scanning a giant billboard full of options.
We think we want more choices, more options.
But sometimes we are wrong.