I would love to have this feature too. 

When creating an Activity, is there any difference in targeting URLs based on an Audience (using Site Pages - Current Page) vs. specifying the URLs in the Activity Location?

Eventually I managed to solve it by filtering on Browser Type does not exist

Recently half of our traffic on some pages is caused by web scrapers. We recognize these visitors because they retrieve internet speeds on our website and have "None" as a browser.  However, when I try to make a segment on this traffic (by segmenting on Browser = "None" or Browser does not exist), I...