A meta tag is a piece of code that provides information about a web page. It helps search engines understand what the page is about and how it should be displayed. Full definition
The regulators say that lawyers should not use meta tags or hidden text to imply they practice in geographic areas where they don't have an office. (lawyerist.com)
The keywords meta tag is mostly ignored by major search engines but it is worth putting a few in there because some smaller search engines and directories do look at them. (datingfactory.cz)
The more serious you are about the optimization of meta tags and overall SEO of your online dating business the better the chances of your site to start bringing you real profit. (skadate.com)