Is trafficholder.com Safe?

trafficholder.com/ is currently categorized as: Pornography Sites that contain sexually explicit material for the purpose of arousing a sexual or prurient interest. Sites that provide online advertisements or banners.

It's an adult traffic broker. They buy and sell traffic. They themselves are not involved in malware installations, but sometimes a traffic buyer has malware on his site. Use the contact form on the Trafficholder site to report them and they will shut down the malicious buyer's account. they could be a bit more proactive though.