There are more too. I have seen one coinconvert.net on the service ANN section if I'm correct. However, among all these new sites, I got impressed by pnnv.com though the domain name is a bit weird. They could have a better domain name instead.
How many Preev.com's treads do we need?
Come on. Most people don't know about the alternatives available. However, there can be another reason. To bring the one which need to be shilled as form of genuine interest. I have seen this many times here. A group of people post/reply on purposes.