They don’t give a reason for this, but I assume it has to do with taxes. You see, if you pay someone $600 in any given year, you are required by law to report that earning and send them a tax form at the end of the year. And since 60,000 equals to $600, I assume they have that rule in place so they don’t have to deal with all that paperwork come tax time.
InboxDollars is one of the worst programs. Unlike others, they have a very short “6-months of inactivity and we’ll close your account and keep your money” term. Plus, you earn next to nothing. I too stopped getting paid emails and tried to unsuccessfully qualify for surveys. As such, I mostly did the big-ticket things, like signing up for money back on donations to charities. I accrued $98 and log in monthly to avoid the “inactivity” thing. But, guess what? They just closed my account for not completing anything in six months. They don’t even hold up their own definition of “activity”. So, user beware–withdraw when you can, even though UNLIKE the other programs, they charge a 3% fee on what you’ve earned. Sketchy, sketchy, sketchy. 

Not a “scam” in the sense of the word, but really not a way to earn any type of money. If you can find the companies that do the surveys and do them on your own with out sites like this you will make a substantially bigger amount of money. The “scam” is they take 90% (if not more, to be honest probably 99%) of the survey payout for themselves. Its the same for the “offers”, they will take the majority of the offer from the company, and give you a small percentage, And if that was not enough, they also take a percentage of your payout. This should be illegal as it is criminal to do this to people. 
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