Hi Friends I wanna know that using keyword tag with keywords is good or bad in all pages of a website. Thanks in advance!
It's not bad, just change it from page to page, that way you'll have a wider range of keywords to add.
You will rank higher if you don't use a keyword meta tag. Keyword meta tag has no bearing on where you rank.
What? I'll repeat. Using a keyword meta tag will not rank you higher. The opposite will, thus, having a keyword meta tag in your page has NO BEARING where you rank! Major SE's don't use it any more.