Selected answers from the Dumb SEO Questions Facebook & G+ community.
Elrey Resultan: Is it okay to use those long tail keywords (inside the red box ) to be in my SEO target keywords or use it in the page content?
They have no statistic value but is it Okay to use them?
Sajid Ali: Yes, if these keywords really relevant with your site you can use them in content no matter if they have no static value but using it will be helpful because it comes in a variation of keywords which you can use in content so that google prefer them.
Rotimi Orimoloye (Orims): And yet, if you simply use them indiscriminately - without accounting for how your content reads to a human user, you could cause problems for yourself. ; So ensure that it ends up as a meaningful and natural read.