Happy New Year! Your pesky student has a question. Do keywords in the Meta Keyword header need to be separated by commas or is it ok if they aren’t? I would believe that if they are not, and well structured, it can leverage both long and short tail terms whilst still having the most relevant keyword in place… I hope my question makes sense.
Some people like to use commas in their META Keywords tag. I don’t. You can either separate the phrases with commas, or just include all your keywords and phrases without commas separating them. Commas are a personal choice and I prefer not to use them in a META Keywords tag because I feel they can act like a stop word to some search engines.
Danny Sullivan wrote a great piece about the META Keywords Tag and the Great Comma Dilemma so you can decide for yourself.
When preparing your Keywords tag, remember that multiple keywords can be integrated into the KW tag as phrases and both the individual keywords and the grouped phrases should be picked up by those few search engines that support the META Keywords tag.
Also keep in mind that Google doesn’t index the META Keywords tag and hasn’t for quite some time.