How NOT to Earn $10,000/Month with Google Adsense.

Here is an explanation why "expensive keyword" isn't equal to "profitable keyword"
Almost all AdSense publishers are looking for the most expensive keywords. Let's have a look at the top 100 most expensive keywords. But first let's add 2 extra columns to the list: clicks/day and cost/day by Google AdWords estimation:

Have you noticed that keyword price result in ZERO profit if there are no clicks? It's cost/day (keyword price X clicks/day) that makes you rich, not keyword price itself.

Here is the list of the most PROFITABLE, not the most expensive AdSense keywords:

Keyword	Cost Per Click	Clicks/Day	Cost/Day
insurance	$17.41	49,893.5	$868,645.81
hotels	$3.52	200,636.0	$706,238.75
film	$2.88	183,044.0	$527,166.75
home	$3.89	102,282.5	$397,878.91
car	$5.09	52,069.5	$265,033.75
schools	$4.13	60,913.0	$251,570.69
acting	$2.28	106,337.0	$242,448.36
credit	$8.67	25,705.0	$222,862.34
cheap	$2.71	82,139.5	$222,598.05
digital	$1.70	130,607.0	$222,031.91
hotel	$2.38	84,776.5	$201,768.06
film schools	$5.64	35,501.5	$200,228.45
software	$3.23	61,259.5	$197,868.19
new	$2.17	90,415.0	$196,200.55
auto insurance	$29.48	6,453.0	$190,234.44
rental	$5.97	31,635.5	$188,863.94
free	$1.06	172,680.5	$183,041.33
travel	$5.02	35,084.5	$176,124.19
auto	$7.28	23,610.5	$171,884.44
video	$2.01	83,295.0	$167,422.95
mortgage	$13.03	12,172.0	$158,601.16
flights	$1.91	75,692.0	$144,571.72
editing	$2.37	57,747.0	$136,860.39
refinance	$20.01	6,827.0	$136,608.27
loans	$9.38	13,966.5	$131,005.77
uk	$1.43	86,623.5	$123,871.60
computer	$3.67	33,043.5	$121,269.64
buy	$2.06	58,840.5	$121,211.43
extended stay	$20.13	5,758.0	$115,908.54
home insurance	$18.75	6,152.0	$115,350.00
training	$3.60	31,112.0	$112,003.20
travel insurance	$11.29	9,861.0	$111,330.69
cars	$3.90	26,198.5	$102,174.15
debt	$9.17	11,104.5	$101,828.26
furniture	$1.76	57,463.5	$101,135.76