nikolayav
You will remember that the original versions of these products were independently developed and then acquired by Google.
Still haven't seen the results, but I assume they threw in a few features on the way also. Docs had seen no interesting additions in quite a while despite the very capable team. So now it is coming out of maintenance mode and will hopefully add features and stay relatively responsive.
Quick check with Alexa gave me something on the order of 2 million for X, that seems really high to me, let's say X=100k (even this seems very generous). Y and Z are pretty tricky, using a gut guess of Y = 5 and Z = 10:
6 * Z / ((Y * X) / 30 ) = (6 * Z * 30) / (X * Y) = 6 * 10 * 30 / (100000 * 5) = 0.0036 = 0.36%
0.36% of the HN audience. Very back-of-the-envelope.
How can anyone read your GMail contacts without your logging into your account?
If the utility of this tool is lost on you even though this password is clearly not stored anywhere, you can manually go out and find on-Facebook friends yourself.
In one particular area of programming, competitive programming, productivity is easier to measure.
One might call Tomek Czaijka the Federer of algorithmic competitions. As of 1.5 yrs ago, he had made more than $130k off of TopCoder competitions [1]. Seeing as how he is still ranked 3rd, this figure might be outdated [2].
I can assure you the average TopCoder contestant who has competed over a comparable amount of time made way less than $130k/30 ~ $4300. Easily more than 30 times the productivity.
You can argue about how coding up toy programs compares to working on products. I suspect there is a strong correlation though.
As a point of reference, please consider Steve Newman, who co-wrote Writely which was subsequently acquired by Google and is today the word processor of Google Docs [3]. He must have made some money in the process and was also successful at topcoder.com [4].
That being said, I do knew similar people with astonishingly low "product" productivity.
1. http://www.portfolio.com/careers/job-of-the-week/2008/07/06/...
2. http://www.topcoder.com/tc?module=MemberProfile&cr=14440...
3. http://www.seattlepi.com/business/262443_googlewritely10.htm...
4. http://www.topcoder.com/tc?module=SimpleStats&c=coder_ac...