You need a souce of traffic to feed your trades unless someone is nice and will always send back more than they get. That happens. We're all interested in new surfers see our sites. If your traffic is productive, you'll have happy trading partners and they will feed you more.
You could add some SE traffic to those bookmarks. You could create some feeder sites. You could do galleries with your recip in them. You could trade or buy hard links.
Buy traffic here