It is correctly stated that information is power and if you have requisite know how of income tax rebate aspects; you can save a considerable amount of tax. Have a look to save tax now and spread the word !!
As per Sec 10(13A) which states that the least of the following:
40% (50% in metros) of your basic salary+ DA (if paid) or in case any excess rent paid above 10% of basic or actual HRA received will be tax exempt.
Make use of the above provisions to save taxes as money saved is money earned and this is a legal way to save tax as Income tax exemption for house rent allowance is also covered under it.
You must understand the difference between Tax Evasion & Tax Avoidance to understand the ways and means to use to seek income tax exemption in a legal manner.