When saving a sharing event, we should check in the browser history for whether the user has visited the URL.
Probably the best way to do this is parse the URL, strip out HTTP/HTTPS and parameters, and then use browser.history.search to get whether the page was visited, how many times it was visited, and when it was most recently visited.
We might also want to check the WebScience.Studies.Navigation data to look up how long the user spent on the page.
When saving a sharing event, we should check in the browser history for whether the user has visited the URL.
Probably the best way to do this is parse the URL, strip out HTTP/HTTPS and parameters, and then use browser.history.search to get whether the page was visited, how many times it was visited, and when it was most recently visited.
We might also want to check the WebScience.Studies.Navigation data to look up how long the user spent on the page.