You already know certain people are hosing you: your mechanic, your handyman, and that irresistibly hard-luck Prince Okoye from Nigeria. See if your empoyer's just another con-man, at Glassdoor.
Just launched but already full o' data, GD illuminates The Price of Happiness by aggregating anonymous users' salaries/satisfaction ratings, showing you what people at companies around the world earn, and how they feel about their boss/work environment -- whether it's "Google boasts toilets with heated seats and built-in bidets" or "Promote me! or I'm going to quite." (Yes...quite.) Just register and provide your woeful comp or a company review; once in, you can compare salaries, bonuses, and commissions for just about any job at a crazy number of medium-to-large companies, from Lucasfilm to North American Bison Co-Op (which uses every single part of its employees). You can also peep detailed past/present accounts of company pros & cons, "Advice to Senior Management", and 1-to-5 satisfaction ratings in everything from Career Opportunities, to Morale, to Fairness and Respect -- find out what it means to them.
For those too lazy to read stuff, GD also provides telling satisfaction-with-CEO stats expressed as an approval rating -- numbers which can quickly explain Okoye's abrupt ouster from the Ministry of Oil.