There are some people who outsource projects and aren't always specific with their instructions. This can lead to wasted time and money and poor reviews being left from one or both parties involved. Some people in richer countries tend to treat workers overseas like cattle, not human beings. That makes me very angry!
Some employers don't understand (or care) that a poor rating can cost someone their only means of making money to support or help support their families. Most of these countries are very poor. Why would they be willing to work for cheap if it weren't so? Most people just don't understand this.
Unlike hiring in the U.S., most Filipinos (for example) are very loyal, as long as you treat them well. However, like anyone else you hire, you MUST explain what you want done in DETAIL so they understand exactly what you want. Just because a worker's profile may say they have experience with a task, Wordpress, Video Creation, Writing, etc, etc, does NOT mean that they know how YOU want it done!
It only takes a few minutes to make a video of the exact steps you want your worker to use to perform a task. You can use Jing Project, Animoto, CamStudio or a number of other free video software to do this.
Once they've watched your video make sure they understand all of the steps before they begin. Ease their mind by telling them that you "encourage" them to ask questions. Many are afraid to do so and some will simply disappear if they don't understand. But if you're patient and kind you could have an outstanding helper for months or even years.
You can then use that video tutorial for every new person you hire in the future without having to constantly explain things to new workers.
Spending a bit of time up front by providing tutorials that workers can refer to can save a lot of headaches for everyone. It can also avoid harmful reviews that could have long term repercussions for both the worker and employers. Yes, it works both ways. Do you think that one of these gentle people will want to work for you if you're a tyrant? Not likely.
Bottom line, treat people with respect by training them properly up front. Also, be prepared to accept a certain amount of responsibility if things don't work out. Don't just automatically give someone a low rating when you could have helped create a better outcome. It may be a simple bad experience for you, but it could be harmful to someone else having the long term ability to earn a living.