Systems and techniques for aggregation, display, and sharing of data

A computer-implemented method comprising:

• selecting a data package wherein the data package identifies a plurality of data objects, wherein each data object includes a tag representing a time;
• identifying a first time period which begins at a first time and ends at a later second time;
• displaying a first portion of a view of the data package, including
• displaying first portions of two or more timelines, wherein each timeline is associated with a respective class of data, and wherein the displayed first portion of each timeline represents the first time period, and
• displaying first graphic items arranged on the first portions of the timelines, wherein each first graphic item displayed on a respective timeline represents one or more of the data objects in the class associated with the respective timeline and tagged with respective times within the first time period;
• receiving user input indicative of scrolling the timelines to a second time period which begins at a third time after the first time and ends at a fourth time after the second time;
• in response to the user input, displaying a second portion of the view of the data package, including
• displaying second portions of the timelines representing the second time period,
• displaying second graphic items arranged on the second portions of the timelines, wherein each second graphic item on a respective timeline represents one or more of the data objects in the class associated with the respective timeline and tagged with respective times within the second time period, and
• pre-fetching scroll data representing one or more of the data objects tagged with respective times after the fourth time.