<p>We compute the reputation of Wikipedia authors according to how long their contributions last in the Wikipedia. Specifically, authors whose contributions are preserved, or built-upon, gain reputation; authors whose contributions are undone lose reputation. </p> <p>We call this a <em>content-driven</em> reputation, since the reputation is computed automatically via text analysis. This contrasts with other reputation systems, such as those in use at <a class="external" href="http://www.ebay.com"><img src="http://trust.cse.ucsc.edu/wiki/modern/img/moin-www.png" alt="[WWW]" height="11" width="11"> Ebay</a>, where buyer and seller reputations are computed on the basis of user-provided ratings.</p>

"To put it into perspective only two to four percent of the world's botanical and zoological species are in serious danger, whereas it's 50 percent of languages. The language crisis hasn't attracted the same degree of public awareness".