How do measure the wealth generated from free online projects?

Ben B asked:
I’m a big fan of Wikipedia, it’s my main page and I’ve spent hours and hours reading articles. I was reading about Wikipedia in the article Wikipedia when I read this:
“In a study of Wikipedia as a community, economics Ph.D. student Andrea Ciffolilli argued that the low transaction costs of participating in wiki [...]

What Web Technologies will I need to know for this project?

amaam89 asked:
I have an ideal and a plan for a virtual community sort of like:
Neopets
Gaiaonline
MySpace
etc
I was wondering how these sites were made? What web languages were used to make them?
I am assuming PHP and Javascript, but I’m certain that there others–what are they? I want to make a website & have been designing the basics [...]

Resistivity Meters for ground water detection, are they accurate and reliable? Are they hard to interpert/use?

MARK C asked: I’m developing a rural community project with my brother in Guatemala and water development is a big need. We would like to know reliable ways to detect ground water to best use resources in well construction. thanks mark

As a small business owner can I write these things off on my taxes?

Shaun D asked: I started a business 1 year ago and am not bringing in much money from it as of now. Every tax write off I can get would be important. I would like to know if I could write off the following things.
- All work related gas mileage for meetings.
- Purchased [...]

Why does the software development community fragment itself, particularly the open-source side of it?

. asked: Why for example does it duplicate (divert, waste) effort on designing parallel separate projects like MySQL and PostgreSQL instead of agreeing to continually refine a single standard application?
Why does it come up with Ruby, Python, PHP (and then, separate “frameworks” for all of these as well), etal, instead of focusing on continually refining [...]

having trouble understanding the question, pls help thanks?

ANewRevolution! asked: Describe a non-development based engineering project that does not target causes of poverty but directly affects an impoverished community.
what does “non-development based engineering project” mean?

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