6. A method comprising: generating a parent process for a parent document; generating a first child process for a first child document of the parent document; generating a second child process for a second child document of the parent document, wherein the second child document is different than the first child document; wherein the first child document and the second child document are included in the parent document; and generating one or more third child processes, each for a different child document of one or more child documents that do not include the first child document or the second child document; sending target data from the first child process to the second child process; sending the target data from the first child process to each of the one or more third child processes; wherein the target data includes one or more of: a highlight instruction that the second child process is to use to visually distinguish at least a portion of the second child document, or user data that the second child process uses to dynamically display content or to generate content within the second child document, wherein the content is different than the user data, wherein the user data includes profile information that is stored in association with a particular user who is a member of a particular social network that includes the profile information; wherein the method is performed by one or more computing devices.
6. A method comprising: generating a parent process for a parent document; generating a first child process for a first child document of the parent document; generating a second child process for a second child document of the parent document, wherein the second child document is different than the first child document; wherein the first child document and the second child document are included in the parent document; and generating one or more third child processes, each for a different child document of one or more child documents that do not include the first child document or the second child document; sending target data from the first child process to the second child process; sending the target data from the first child process to each of the one or more third child processes; wherein the target data includes one or more of: a highlight instruction that the second child process is to use to visually distinguish at least a portion of the second child document, or user data that the second child process uses to dynamically display content or to generate content within the second child document, wherein the content is different than the user data, wherein the user data includes profile information that is stored in association with a particular user who is a member of a particular social network that includes the profile information; wherein the method is performed by one or more computing devices. 10. The method of claim 6 , wherein the target data includes user data that the second child process uses to dynamically display the content or to generate the content within the second child document, wherein the content is different than the user data, wherein the user data includes profile information that is stored in association with the particular user who is the member of the particular social network that includes the profile information.