What I had been able to gather so far is that building long tail keywords helps you to optimize the CPC. I was wondering if someone has experimeted with different Search Engines (other than Google, yahoo and msn).
My questions are - In what region which search engines are more successful. - Does it works out if instead of spending the complete PPC budget on single search engine, i should allocate it on different SEs. - How do I do the budget allocation in such a case?