But teachers have been uncertain about the value of the website - and wary that it could be used unfairly by parents with a grudge.
See Winning with Small Value Stocks on my research website for details and figures.
The website offered a calculation of the future value of gold.
As an example, a potential application for an auto manufacturer pushing test drives on its website could be able to measure the value of all test drives booked on the site, and the value of those booked after being referred from social media sites.
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Taobao expects to double the value of transactions done through its website to 400 billion yuan this year.
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But its stock isn't listed on an exchange, its redemption price is minimal, and it doesn't appreciate in value, according to the team's website.
The business model was simple: a website that rented high-end jewelry for special occasions at a fraction of the retail value of each piece.
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Customer service was not a value I saw slopping around in excess the last time I visited Microsoft's website.
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So whilst click-through rates on emails and website hits are both free to measure and very seductive, it takes time and money to measure the value of your brand (many big PLCs value these on their balance sheet as goodwill running into several hundred million).
Several years after moving it to a website, Amazon founder Jeff Bezos offered to buy the site in a cash-and-stock deal, the value of which has never been disclosed.
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