I've written quite a few articles for Examiner.com, and though they have been published, I have never received a penny in compensation. The way you are paid is so deliberately complicated that it's virtually impossible to estimate how much, if any, you will be paid for your work. They base it somehow on the volume of work you produce, not quality or even content. Indeed, even though I have an actual, bonafide bachelor's in communications, they never asked for proof nor did they seem too concerned if I had any writing experience prior to that.
The biggest concern, however, is that none of the writers are vetted, Examiner.com is publishing their work mostly sight-unseen, and so there is no call for accuracy or integrity in the articles. And again, it is being touted as a "news" source, which it clearly is not.