Yes, you can get external traffic there. I know this because I have a post there that has gotten at least a few thousand views. That's impossible for me to get internally, plus I checked it in the SERPs. I accidentally picked some keywords that got picked up by the search engines. As to how I found all this out, I reached payout awhile back very quickly, so I looked through my posts to see if I could find out why and found my money-maker there with many views that had to come from external traffic. You can get some residual income there, by the way. A lot of people have been saying you can't, but you can.