Hiring virtual employees?

"The bigger problem on Elance, in my experience, is dummy projects. Some buyers post projects simply to get an idea of the cost or to try to find free work."

Actually our organization wanted to hire virtual employees for web designing and SEO. And we are looking for whole virtual team. Because now it's become very expensive for our organization to recruit employees :( And we need reliable and quality virtual employees.

We were prepared to post our requisite on freelancers or e lance sites. But we have observed the unacceptable thing. “Dummy projects”. Due to which we people unable to understand that why our bids not get awarded. Ultimately the outcome is wastage of time as well as money in the entire biding process. So, what next?

Then our team decided to directly contact companies who are providing virtual employee services. But the question is "RELIABILITY and Hiring charges".

We have got replies from some forums and communities. So, now we have one option company www.marketraise.com. It’s nice.
But we want best service provider with better package.
So, the major facts which we believe with freelancing/e lance/other bidding sites are
Disadvantage- Lack of reliability
Advantage- time and money saver

Thanks in advance
Sophia