TBH, I don't even bother with Yahoo!
Their costs are too high for premium services and the benefits are almost nil.

After several months, I only get about one visit a day from Yahoo.

May be you should try to improve the keywords and to find the more suitable ones.

Wow, thats not much at all, try putting that keyword into the google adwords keyword tool to see how many searches Google would get.. I don't think Yahoo has a similar too.

It maybe that your description just isn't converting searchers into clickers if you get me.. so you could experiment using different descriptions.

But in general I wouldn't bother with Yahoo, just rank for your keywords in Google, you'll get way more clicks through to your site im sure.

target google for traffic .....as it is best source of it.

google is the best to give u more traffic rather than any other search engine.
it is world wide using for searching any result.

You need to some alternatives of your keywords, may be new keywords get the better results for you...

Originally Posted by Conran

Their costs are too high for premium services and the benefits are almost nil.

Not nil but the prices are comparatively so high.