11. The computer-implemented method of claim 10 , wherein the first characterization of the skill level of the first individual in the specified skill is determined by: requesting a fourth individual to specify one or more individuals having the specified skill; receiving, from the fourth individual, an indication that the first individual has the specified skill; requesting the fourth individual to characterize the skill level of the first individual in the specified skill; receiving, from the fourth individual, a fourth characterization of the skill level of the first individual in the specified skill; requesting a fifth individual whether the fourth characterization accurately describes the skill level of the first individual in the specified skill; and programmatically determining the first characterization based on the fourth characterization and a fifth characterization received from the fifth individual, wherein the first characterization matches the fourth characterization if the fifth characterization confirms that the fourth characterization accurately describes the skill level of the first individual in the specified skill.
11. The computer-implemented method of claim 10 , wherein the first characterization of the skill level of the first individual in the specified skill is determined by: requesting a fourth individual to specify one or more individuals having the specified skill; receiving, from the fourth individual, an indication that the first individual has the specified skill; requesting the fourth individual to characterize the skill level of the first individual in the specified skill; receiving, from the fourth individual, a fourth characterization of the skill level of the first individual in the specified skill; requesting a fifth individual whether the fourth characterization accurately describes the skill level of the first individual in the specified skill; and programmatically determining the first characterization based on the fourth characterization and a fifth characterization received from the fifth individual, wherein the first characterization matches the fourth characterization if the fifth characterization confirms that the fourth characterization accurately describes the skill level of the first individual in the specified skill. 12. The computer-implemented method of claim 11 , wherein the first characterization is a function of: (i) the fourth characterization and (ii) the fifth characterization, if the fifth characterization indicates that the fourth characterization does not accurately describe the skill level of the first individual in the specified skill, in which case the first characterization, the fourth characterization, and the fifth characterization are distinct; wherein the computer-implemented method further comprises, upon receiving, from the second individual, an indication that the second individual declines to characterize the skill level of the first individual, refraining from requesting the second individual to characterize the skill level of the first individual, for at least a predetermined period of time, wherein the computer-implemented method is to determine individuals having target skills, based on automatic and iterative skill refinement via user polling.