Saving graphs with tags helps to organize graphs for later.
Tags can be searched when Exploring other graphs and tags also help organize your own graphs.
You can favorite graphs by clicking on the Star icon. Favorite graphs appear in your profile's favorites section.
When you're logged in, you can fork other public graphs by clicking on the 'Fork' link. This will open up the editor with the graph in it allowing you to modify and edit someone else's graph for your own use case. After performing your edits, you can save a new graph using the name, description, and tags that you choose.
View some examples.