Question : How many keywords is too many in the meta data?

Just wondering if there are too many keywords you can use in your meta data.

I just used a keyword generator tool and it gave me heaps of words, so I just want to know if using them all in the Meta data of the html can be detrimental?

Answer : How many keywords is too many in the meta data?

Q: Why doesn't Google use the keywords meta tag?

A: About a decade ago, search engines judged pages only on the content of web pages, not any so-called "off-page" factors such as the links pointing to a web page. In those days, keyword meta tags quickly became an area where someone could stuff often-irrelevant keywords without typical visitors ever seeing those keywords. Because the keywords meta tag was so often abused, many years ago Google began disregarding the keywords meta tag.Q: Why doesn't Google use the keywords  meta tag?A: About a decade ago, search engines judged pages  only on the content of web pages, not any so-called "off-page" factors  such as the links pointing to a web page. In those days, keyword meta  tags quickly became an area where someone could stuff often-irrelevant  keywords without typical visitors ever seeing those keywords. Because  the keywords meta tag was so often abused, many years ago Google began  disregarding the keywords meta tag.

There can be an indirect influence

• People might scrape your content based upon meta keywords 
• Your meta keywords might also be used in rel microformat tags that link internally or externally. 
• Meta keywords might appear on a 3rd party site used to categorize a listing.