If you're concerned about how people are understanding specific elements on moments on a screenshot, check out the label test. In this test type, you place labels on the screen for testers to fill in, so you can see what people think something is...and if that matches what it really is.
After you select a screenshot, URL, or Notable post you can click on which pieces you want users to label. Your testers can then label any or all of them, and we roll those results up based on each label. Try this out if you're wondering whether people understand an activity feed, or if links lead to where users expect them to lead.
