I think a real issue in those sites, is that you can get a comfortable living for some months, years inclusive . But you could have a real issue with the the "specialization", here you need learn all the possible technologies, all the technologies and in a big numbers of times "discounts" and the competition .
And the competition outside from a niche could generate reduction in the prices, because the comfortable salary could be very different in some countries.
For example, a salary of 2k, is good for a country like mine (El Salvador), but is not enough for persons from U.K., U.S.A. Germany I think, not for your official work.
Slashdot Mirror
I think a real issue in those sites, is that you can get a comfortable living for some months, years inclusive . But you could have a real issue with the the "specialization", here you need learn all the possible technologies, all the technologies and in a big numbers of times "discounts" and the competition . And the competition outside from a niche could generate reduction in the prices, because the comfortable salary could be very different in some countries. For example, a salary of 2k, is good for a country like mine (El Salvador), but is not enough for persons from U.K., U.S.A. Germany I think, not for your official work.