I'm aware of the change.org petition, but I doubt it will work. I move the idea of putting justice into our own hands.
Do not use your real details if possible
First, the domain provider: TLD Registrar Solutions
Send reports to firstname.lastname@example.org to take down the domain. Spam their support page if possible.
Provider? DDOS Protection?
As you may know, this site is protected by cloudflare, so a complaint should also be sent there.
This IP Address
A Whois on the site led me to the IP address 184.108.40.206 which is based on Kiev, Ukraine. Whether this is the host or not, an investigation should be done.
Other stuff - Refrain from visiting wallpart
According to this article, the site contains malicious code. And according to this article, the forms might collect information from you so do not fill them up.
More Stuff: peterandcompany.tumblr.com/pos…
Report to Google's Safebrowsing so that it can be blacklisted: www.google.com/safebrowsing/re…
I'll be submitting some artworks pretty soon.