For those who insist meta keywords are useful

[Arantor]

As ever, content is king, not metadata.

[sshahnawaz]

The competition is tough, unless you do some Black Hat SEO.... 

[Arantor]

At which point when the search engines realise, they blacklist you.

[sshahnawaz]

Yeah, this is the big tragedy..... 

[Arantor]

Why? Because you've intentionally misled them into ranking your site higher?

[sshahnawaz]

Also you have broken all the rules, you cheated not only the search engines and your users, but also the people who were really in search of some topic and you wasted their time. So you deserve the penalty. 

[Arantor]

Indeed. Not an issue for me since I don't provide any worthwhile content, but I know it is a problem, and I have seen sites penalised for various things.