Most everything I work on is related to graphs if I squint enough. But to take an example from my visual planning - Gameplan.global - i use graph algorithms to

Most everything I work on is related to graphs if I squint enough. But to take an example from my visual planning - Gameplan.global - i use graph algorithms to model task dependencies, as well as the grouping structure. When the tasks and dependencies are modelled as a graph, and the user wants to change a dependency, I can check the graph for a cycle. If a cycle will be introduced after the change, the change is disallowed. It's not as grandiose as one could imagine for a very large social network graph, its practical and solved the problem I.