22. A computer-implemented method, comprising: receiving, by one or more configured computing systems, information from an executing program of a task requester about a task that is available to be performed, the information received via a defined programmatic application program interface and indicating one or more criteria for satisfactory performance of the task; providing, by the one or more configured computing systems, information about the task to one or more human task performers who are able to satisfactorily perform the task based on the indicated criteria; and after receiving results for the available task based on performance of the task by one or more of the human task performers to whom the information about the task was provided, supplying, by the one or more configured computing systems, the received results via the defined programmatic interface to a program of the task requester.
22. A computer-implemented method, comprising: receiving, by one or more configured computing systems, information from an executing program of a task requester about a task that is available to be performed, the information received via a defined programmatic application program interface and indicating one or more criteria for satisfactory performance of the task; providing, by the one or more configured computing systems, information about the task to one or more human task performers who are able to satisfactorily perform the task based on the indicated criteria; and after receiving results for the available task based on performance of the task by one or more of the human task performers to whom the information about the task was provided, supplying, by the one or more configured computing systems, the received results via the defined programmatic interface to a program of the task requester. 23. The method of claim 22 wherein the available task has associated compensation for satisfactory performance of the task, and wherein the method further comprises providing at least a portion of the associated compensation to a human task performer who performs the task.