Writing articles is thought to be one of the easiest ways of making some quick cash and it certainly is but there are some thugs, in almost every corner of the internet world, who are exploiting the innocent (read fresh) writers in their shameful act of earning the free services from these writers.
As i am one of the victims, i request all the writers out there to make sure that they always ask for some part of the total payment, upfront. This reduces the risk. The part can be some percentage of the total said amount of the project.
Be on the look for these thieves and walk on the safer side.
Happy writing =)