I have not heard of the business. Interesting. I checked their site. It seems proprietary -- thus no vetting.

Does it mean a special client?
How does the user know it is actually being vetted by SynerTAG?
What is their EULA as traffic appears to travel through their system first?

Please let us know what you find out. And, thanks for mentioning SynerTAG. I am really curious.