The sandboxing of third-party scripts that we talk about in the paper (http://www.cs.princeton.edu/~jterrace/docs/jsjs.pdf http://www.cs.princeton.edu/~jterrace

The sandboxing of third-party scripts that we talk about in the paper (http://www.cs.princeton.edu/~jterrace/docs/jsjs.pdf http://www.cs.princeton.edu/~jterrace/docs/jsjs.pdf) is one possible use case