This document describes various techniques for creating, modifying, and using graphical mashups. In one embodiment, a graphical mashup is created based on locations of graphical representations of objects in a working area. Logical connections between the objects are created based on the objects' locations relative to each other. Alternatively or additionally, the techniques may enable a user to create or modify a graphical mashup by adding or deleting objects, modifying logical connections between objects, annotating objects, or abstracting the graphical mashup.