[quote="pemburung"]... However, that would mean 1.08 billion unique visitors per year. One-sixth of the world's population. On-line on Google? Perhaps. But even if so, after less than 6 years at that rate(allowing for deaths) they would be relying on children less than 6 years old for new, unique visitors.

Hi, Sorry I know dave may have replied you before, but unique visitors won't die after once visiting google! they'd propably surf google and click the ads next months. you may find some coefficients for converting unique visitors per month to per year. but the co-efficient would be something less than 12! it depends on how many users surf google rarely (2 times in a year for example) if all of 90M surf google at least one time each month, the coefficient would be exactly 1.
regards,
Emad Honarparvar

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