Based on few free online sources i calculated how much an average user costs google.
First i'll describe how i was calculating, then i'll write the result.
At beginning I checked how many searches i made.
For this i used Google web history (if you are logged in to google you can see it at [google.com...] ). On the right there is a small calendar and underneath it is a line with sum of person's searches.
Since 06 October 2006 i've made 8728 searches and
according to timeanddate.com it has been 976 days from that date.
This means , on average, i make 8.94 searches per day , 3,098 per year.
One thing to acknowledge is that i'm not always logged and google counts my searches only when i'm logged in so i'll increase the number of searches by arbitrary "times 2" factor.
Next part is google cost.
Here i used googles "Total Operating Expense" from [google.com...] (Annual Data view).
For year 2008 it was $16,258.34 mln (~$16.26bln)
To calculate cost of one search the last variable i'll use is the number of google seraches made worldwide.
Newest data i found was comScore's press release from 2007 [comscore.com...] .
It states that google users made 37,094,000,000 searches in August
Thats ~37bln a month, times 12 , ~444bln searches a year.
So here goes the The formula:
(Google Expense) / (Number of search World wide a year)= Cost of one search
(Cost of one search) * (Average persons searches per year )= Cost of using google by one person per year
($16bln) / (444bln)=$0.036
(3,098 x 2) x $0.036 = 223.05 U.S. dollars
Thats $223, quite big.
Would you pay $223/year to use Google ads free?
[edited by: Robert_Charlton at 6:16 pm (utc) on June 8, 2009]
[edit reason] fixed link formatting [/edit]