Abstract: Systems and methods for authenticating a request between a client computer and a transaction server are provided. An application request, comprising an identity of a user originating the request, is received at an application server from the client. The application server constructs a signing key based on (i) the identity of the user making the request, (ii) a time based salt value, (iii) a secret shared between the application and transaction servers and, optionally, (iv) an identifier of the distributor or developer of the application. The signing key is embedded in an unbranded version of the application thereby branding the application. The branded application can sign a request with the signing key and submit the signed request to the transaction server with the identity of the user and the identifier of the distributor or developer of the application.

Abstract: A method, system, and computer-readable medium is described for facilitating interactions between task requesters who have tasks that are available to be performed and task performers who are available to perform tasks. In some situations, the tasks to be performed are human performance tasks that use cognitive and other mental skills of human task performers, such as to employ judgment, perception and/or reasoning skills of the human task performers. In addition, in some situations the available tasks are submitted by human task requesters via application programs that programmatically invoke one or more application program interfaces of an electronic marketplace in order to request that the tasks be performed and to receive corresponding results of task performance in a programmatic manner, so that an ensemble of unrelated human agents can interact with the electronic marketplace to collectively perform a wide variety and large number of tasks.

Abstract: Systems and methods for authenticating a request between a client computer and a transaction server are provided. An application request, comprising an identity of a user originating the request, is received at an application server from the client. The application server constructs a signing key based on (i) the identity of the user making the request, (ii) a time based salt value, (iii) a secret shared between the application and transaction servers and, optionally, (iv) an identifier of the distributor or developer of the application. The signing key is embedded in an unbranded version of the application thereby branding the application. The branded application can sign a request with the signing key and submit the signed request to the transaction server with the identity of the user and the identifier of the distributor or developer of the application.

Abstract: A method, system, and computer-readable medium is described for facilitating interactions between task requesters who have tasks that are available to be performed and task performers who are available to perform tasks. In some situations, the tasks to be performed are human performance tasks that use cognitive and other mental skills of human task performers, such as to employ judgment, perception and/or reasoning skills of the human task performers. In addition, in some situations the available tasks are submitted by human task requesters via application programs that programmatically invoke one or more application program interfaces of an electronic marketplace in order to request that the tasks be performed and to receive corresponding results of task performance in a programmatic manner, so that an ensemble of unrelated human agents can interact with the electronic marketplace to collectively perform a wide variety and large number of tasks.

Abstract: Systems and methods for authenticating a request between a client computer and a transaction server are provided. An application request, comprising an identity of a user originating the request, is received at an application server from the client. The application server constructs a signing key based on (i) the identity of the user making the request, (ii) a time based salt value, (iii) a secret shared between the application and transaction servers and, optionally, (iv) an identifier of the distributor or developer of the application. The signing key is embedded in an unbranded version of the application thereby branding the application. The branded application can sign a request with the signing key and submit the signed request to the transaction server with the identity of the user and the identifier of the distributor or developer of the application.

Abstract: A method, system, and computer-readable medium is described for facilitating interactions between task requesters who have tasks that are available to be performed and task performers who are available to perform tasks. In some situations, the tasks to be performed are human performance tasks that use cognitive and other mental skills of human task performers, such as to employ judgment, perception and/or reasoning skills of the human task performers. In addition, in some situations the available tasks are submitted by human task requesters via application programs that programmatically invoke one or more application program interfaces of an electronic marketplace in order to request that the tasks be performed and to receive corresponding results of task performance in a programmatic manner, so that an ensemble of unrelated human agents can interact with the electronic marketplace to collectively perform a wide variety and large number of tasks.

Abstract: Systems and methods for authenticating a request between a client computer and a transaction server are provided. An application request, comprising an identity of a user originating the request, is received at an application server from the client. The application server constructs a signing key based on (i) the identity of the user making the request, (ii) a time based salt value, (iii) a secret shared between the application and transaction servers and, optionally, (iv) an identifier of the distributor or developer of the application. The signing key is embedded in an unbranded version of the application thereby branding the application. The branded application can sign a request with the signing key and submit the signed request to the transaction server with the identity of the user and the identifier of the distributor or developer of the application.

Abstract: A method, system, and computer-readable medium is described for facilitating interactions between task requesters who have tasks that are available to be performed and task performers who are available to perform tasks. In some situations, the tasks to be performed are human performance tasks that use cognitive and other mental skills of human task performers, such as to employ judgment, perception and/or reasoning skills of the human task performers. In addition, in some situations the available tasks are submitted by human task requesters via application programs that programmatically invoke one or more application program interfaces of an electronic marketplace in order to request that the tasks be performed and to receive corresponding results of task performance in a programmatic manner, so that an ensemble of unrelated human agents can interact with the electronic marketplace to collectively perform a wide variety and large number of tasks.

Abstract: A method, system, and computer-readable medium is described for facilitating interactions between task requesters who have tasks that are available to be performed and task performers who are available to perform tasks. In some situations, the tasks to be performed are human performance tasks that use cognitive and other mental skills of human task performers, such as to employ judgment, perception and/or reasoning skills of the human task performers. In addition, in some situations the performance of tasks is facilitated by using information about qualifications of task performers that are related to performance of tasks Various types of qualifications about task performers can be specified, and qualification information can be specified and used in various ways, such as to limit task performance and/or access to other functionality to users having appropriate qualifications.

Abstract: A method, system, and computer-readable medium is described for facilitating interactions between task requesters who have tasks that are available to be performed and task performers who are available to perform tasks. In some situations, the tasks to be performed are human performance tasks that use cognitive and other mental skills of human task performers, such as to employ judgment, perception and/or reasoning skills of the human task performers. In addition, in some situations the available tasks are submitted by human task requesters via application programs that programmatically invoke one or more application program interfaces of an electronic marketplace in order to request that the tasks be performed and to receive corresponding results of task performance in a programmatic manner, so that an ensemble of unrelated human agents can interact with the electronic marketplace to collectively perform a wide variety and large number of tasks.