4. A method comprising: under control of one or more computing systems configured with executable instructions, training a classifier to categorize individual ones of multiple resumes into one of multiple classes, the training of the classifier producing a trained classifier; publishing a request to a pool of human workers via a crowdsourcing electronic marketplace to request the pool of human workers to locate resumes for categorization using the trained classifier and to provide contact information of candidates associated with the resumes, wherein the candidates are not included in the pool of human workers; receiving, based at least in part on the request, a resume of a candidate from a human worker of the pool of human workers; and categorizing, using the trained classier, the resume into one of the multiple classes based at least in part on the contact information of the candidate being received from the human worker, and wherein the trained classifier applies predetermined criteria to classify the resume.
4. A method comprising: under control of one or more computing systems configured with executable instructions, training a classifier to categorize individual ones of multiple resumes into one of multiple classes, the training of the classifier producing a trained classifier; publishing a request to a pool of human workers via a crowdsourcing electronic marketplace to request the pool of human workers to locate resumes for categorization using the trained classifier and to provide contact information of candidates associated with the resumes, wherein the candidates are not included in the pool of human workers; receiving, based at least in part on the request, a resume of a candidate from a human worker of the pool of human workers; and categorizing, using the trained classier, the resume into one of the multiple classes based at least in part on the contact information of the candidate being received from the human worker, and wherein the trained classifier applies predetermined criteria to classify the resume. 5. A method as recited in claim 4 , further comprising selecting individual ones of the pool of human workers based at least in part on information from prior projects associated with the individual ones of the pool of human workers.