You could go after their funding.
uploadgigdotcom/premium/index/3839323930
copy and paste the url and change out the dot with a '.'
then you'll have to signup with some fee email account to get down to how they bill, and then include them in the dmca emails, I can assure you that seems to get these scumbags attention more than anything. If they think your fucking with their money, they will sooner delete your files than deal with you complaining to their sponsors and money sites
