Traffic exchange sites are good for getting good traffic. You may not get targeted traffic from it

Traffic exchange sites are good for getting good traffic. You may not get targeted traffic from it but we can have some good readers for our blog. I mean I had got few followers for my blog using it. So we should not miss this free feature for advertising.. We can use it first for getting regular visitors .. And after that we can go for some program like google adsense .. But we can't do the same after putting google ads. but those readers may come after that too. What you think about it ?