United Airlines had the highest complaint rate, almost double the prior year, while Southwest had the lowest.

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Dr Sean Elyan defended the trust saying its "recorded compliment rate" was "10 times greater than the complaint rate".

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United Airlines had the highest consumer complaint rate of the 14 airlines included in the report, with 4.24 complaints per 100, 000 passengers.

NPR: Airline Passenger Complaints Surged In 2012

That was nearly double the airline's complaint rate the previous year.

NPR: Full Flights, Small Seats Make Passengers Grumpy

Dr Sean Elyan, the trust's medical director, defended the trust at the time saying its "recorded compliment rate" was "10 times greater than the complaint rate".

BBC: Gloucestershire Royal Hospital

It also accuses Avvo of manipulating his score based on whether he is willing to engage with the site, a common complaint against sites that rate businesses.

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The complaint alleges that UBS financial advisers sold auction rate securities to clients without making them aware of the risks.

FORBES: Another Legal Headache For UBS

All needed their funds to be as liquid as cash, the complaint says, and all found out just how unliquid their funds were after they tried to sell the auction rate securities they had been told were as good as cash and couldn't.

FORBES: Another Legal Headache For UBS

One complaint already on the Web-site accounted the story of a customer who got duped into an exorbitantly high interest rate on his purchase when the customer service representative lied to him about whether he qualified for the "no interest, no payment" financing.

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