Seriously, people, put the keyboard down and walk away. I don't know why this trend started a few months ago, but commas in tags are for separating terms, not every word.

If you find you've tagged something "the", "and", "be" or "to" then you're doing it wrong. "Richard" and "Dawkins" should not be 2 separate tags. "Jimmy" and "Carr" should not be 2 separate tags.

We don't want a Richard Dawkins video to match a Richard Pryor video. We don't want a Jimmy Carr video to match a Jimmy Carter video. This is exactly what happens when you type "richard, dawkins" rather than "richard dawkins" or "jimmy, carr" rather than "jimmy carr".

Also, tags should not be the title repeated with commas inserted. "give, your, comma, key, a, fucking, rest" would not be appropriate tagging of this post if it were a video. Each term should be related to the post on its own. Something like "comma, tagging, tags" is completely adequate. You don't have to use the entire 80 characters and more is not necessarily better, especially when it means adding inaccurate terms.