问题
Do you use "keywords" meta in your site, knowing that Google does not use them (and has no plans) in page ranking, and perhaps even search?
回答1:
Yes you do; Google is not the only search engine in the web although its has the major market share. There are other engines including Yahoo which use the Keywords META to some extent.
回答2:
No. I don't want competitors knowing what I am trying to rank for. Keywords are very valuable in some markets. If you found a good keyword phrase that is converting well (and your competitors don't know about it) do yourself a favor, and keep a monopoly on it.
回答3:
That is NOT a reason to abandon keywords altogether.
They are still indexed and searchable, and so still have a function.
回答4:
Yes, we do. No one knows the exact Google (or any other search engine) algorithm.
In addition, lots of companies use "keywords" for internal websites that host tons of Html generated content.
回答5:
I've heard from so many people that Google doesn't use meta keywords, I'm not sure I'm convinced of that however. But, whether they do or they don't you should still use them because Bing and Yahoo (the other 2/3 or the big 3) still do use them. But remember to limit your keywords because (based on popular opinion) none of the 3 engines read past character 46.
回答6:
I did, because I didn't know that fact. Now I am thinking that is not worth doing so insignificant I see the "energy conversion efficiency", even if we don't take Google in consideration, other SE seems do not take much attention to it...
来源：https://stackoverflow.com/questions/3190594/html-meta-keywords-worth-including