He is the founder of Perfect 10, an adult magazine focusing on women without cosmetic surgery, and runs the United States Investing Competition.
Zada made headlines in 1996 when he offered $400,000 for anyone successfully refuting his claim that balancing the United States federal budget over a multi-year period without an accompanying substantial trade surplus would be effectively mathematically impossible.
[5][better source needed] It has been claimed that these losses have been borne by Zada because of the deductions this allows against gains made in the money market.
Other lawsuits Zada filed involved adult verification system supplier Cybernet Ventures, from which he received a confidential settlement, and Visa and MasterCard, where he alleged that these credit card companies benefited from fees charged to access unauthorized material at third-party pay sites.
[6] The company also sued Giganews, Inc.[7] It has been claimed that Zada spends minimal time – 40 to 50 hours a year – creating content for the site, but "8 hours a day, 365 days a year" on litigation, leading some to call Perfect 10 little more than a copyright troll – by 2015, the company had filed 20 to 30 lawsuits.