Yahoo search marketing? Would it be possible (or a good idea) to link to a blog from a search campaign?
I guess paying for Blog traffic would not make sense unless you are promoting some products via affiliate marketing. You should first try organic traffic via directories, articles and forums.
PPC or Yahoo Search Marketing should be used in order to generate revenue. That's what its all about. Link to a product, affiliate offer or something which you can get money from. Using it is pretty easy, try it yourself and you'll get the hang of it. Unless you've got affiliate links in your blog or some high paying ads, don't send traffic that costs money to your blog. Why would you do that?