Some traffic sources may not send many clicks in the beginning, but that doesn’t always mean they are bad. A low number of clicks could be because of bidding, timing, or how much traffic that source gets. Turning them off too fast might make you miss a good one that just needs more time. It can help to let the campaign run a bit longer before deciding. But if a source stays low with no signs of improvement after some testing, then it might be better to pause it. What do you think is a good way to judge low-click traffic sources?