Triond – This used to be one of the best sites to write for with nice page views and earnings however as more and more people joined, Triond started to accept all content, even duplicated, stolen and low quality spam and the Google ranks dropped and Triond lost 99% of its traffic, finally, with Google Panda and now it is not worth any minute of your time. 1500 articles generate less than 1$ per month, today. What such thing happened? Triond used to be a 1.5 million dollar business and got big quick and ignored the users, got too arrogant and in the end paid the price. At its height, in 2009, Triond even stopped teplying to people and stopped being nice, and completely dismissed all the advice from experienced webmasters and content writers. Now Triond is worth next to nothing.
Bukisa – Never was a good site to write for, articles got no page views and the amount of money paid by a thousand views dropped every month with the economic recession. Now this site pays next to nothing.
Yahoo Voices – This site promises to pay a lot of money but only to the people from US. All other writers get paid only if their articles get page views, which they don’t.
Wordpress dot com – Writing for this website means that you can never make money because Wordpress dot com does not allow advertising networks or affiliate programs. The site wants to keep quality at the top by dismissing bloggers who are in the blogging world for the profit.

Comments
I've all but given up with Triond and it needs to do something about the low quality, blatantly untrue articles if it ever wants to be taken seriously again.
Wordpress don't allow adverts from third party advertisers but if you have enough traffic they do offer there own advertising programme.