It is paramount to find out the reputation of the service provider before you hire them.
On the other hand, see to it that they give you the best output.
A few weeks ago I started a new, 2 year BCcampus project that will explore open source alternatives to commercial online homework systems.
The system offers a variety of content options, allowing professors to design course material that best suits their needs.
Students are able to view the content, receive immediate feedback, and access automated grading.