8. The method of claim 6 wherein the plurality of content items are separated into multiple comment groups each corresponding to one of multiple attributes for a category of information, and wherein the multiple selected factors include at least one of a group of factors including a total quantity of supplied content items for each of at least one of the multiple comment groups, an aggregate sentiment of supplied content items for each of at least one of the multiple comment groups, and a rate of change in total quantity of content items supplied between two or more time periods for each of at least one of the multiple comment groups.
6. A computer-implemented method comprising: obtaining, by one or more configured computing systems of a group discussion prediction service, information about a distributed group discussion that involves a plurality of users submitting a plurality of content items for the distributed group discussion, the obtained information including information about one or more predictions by the group discussion prediction service regarding future content items that will be submitted for the distributed group discussion; selecting, by the one or more configured computing systems, multiple factors to use in summarizing information about the distributed group discussion; determining, by the one or more configured computing systems, multiple visual aspects to use to display information about the multiple selected factors, wherein the multiple visual aspects include sizes of displayed items and vertical locations of displayed items, and wherein each of the multiple selected factors is associated with at least one of the multiple visual aspects; generating, by the one or more configured computing systems, information for display to one or more users that is based at least in part on the one or more predictions, the generated information including, for each of the multiple selected factors, a summarization that is represented using the at least one visual aspect associated with the selected factor and that is based on at least some of the obtained information corresponding to the selected factor; and providing, by the one or more configured computing systems, the generated information for display to the one or more users.