Do you remember Cha Cha the first search engine to hire personal researchers ( Cha -Cha guides) for your queries?
The company decided to disconnect the innovative practice for their main online search engine, but continued offering human help for searches through their new mobile website.
"ChaCha's ingenious new 1-800-2-ChaCha (800-224-2242) mobile answers service allows mobile phone users to ask an extensive range of questions in conversational English while on the go — and the free answers are texted back within minutes." More details are available from Yahoo Finance.
Obviously Cha Cha realized that the real niche for their service is mobile and before search engines develop easy to use applications for mobile search, Cha Cha will cash in on their idea.