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<p>After thinking about my previous statement, I should correct myself. There is a bounded amount of “wealth” that is available for paying salaries. The amount that is paid might fluctuate quite wildly, e.g. if there is an economic bubble (which some feel the social networking phenomenon to be). But there is no infinite supply of “wealth” that can pay salaries. At some point, some people will be turned away, unless either they are willing to work for free, or all workers agree to take pay cuts in order to keep more workers employed.</p>