When the need to outsource the writing of your articles comes along be very careful. You could come out of it having lost a significant amount of money.
In the advertising section of the WF there are quite a number of adverts from writers. Do not make the mistake of thinking that because their sample work is beautifully written, the work that they do for you will be equally well written.
Ignore the samples completely and request that one or two articles be written for you, but do be prepared to lose that money. I would also recommend that you offer the writer a 50% deposit with the remainder to follow on receipt of an acceptably worded article.
Unfortunately many of the advertisers do not do the writing themselves, they simply outsource down the line to others who will accept a pittance for their work and whose command of the English language, while being great for general conversation, is simply not good enough for the writing of internet marketing reports.
Whenever possible it may well be far less costly to purchase suitable PLR material and use them as a base to quickly re-write a fresh article although PLR articles can be used as is. A number of PLR companies will be very happy to take product requests, but you will may have to be patient while you wait for your turn to come along because others have put in requests ahead of you.
All the best