Yikes! I won't quote any of the replies but after reading this topic, now I know why I've never outsourced something of this nature, there is just too much risk involved. It's akin to dropping your children off with a Nanny you've never met.
Many sites involved in these activities are spinning their wheels, wasting their time and their money. If you're going to outsource anything, let it be application development that when finished will attract links naturally and without much effort on your part.
All this commodity link stuff will get you exactly what you paid for. Commodity links. Everyone has them. They are typically discounted and worthless for the most part. At the same time you're doing all of this, the flags are going up. Your link profile is being corrupted and it clearly shows when someone goes on a link buying campaign. Bad news if you ask me.