Yahoo! Search Engine
History
Originally known as “Yahoo! Search”, this search engine upon its conception mearly provided a web portal to the results of another major search engine. Google’s results were used in the output for the Yahoo! Search web portal until 2004 as Yahoo had no way to actively crawl, store or retrieve any of the data itself.
Seeking to provide its own search engine results and remove it’s dependency on Google for listings, yahoo began acquiring other search engine’s and companies that could help in the development of it’s own search engine algorithm. In 2002 Yahoo acquired inktomi, a site responsible for providing results to a number of Search Engine portals and the leading PPC Search Engine at the time Overture Services Inc. Overture itself the owned organic and meta search engines such as All The Web and Altavista. Despite these acquisitions, for the next year Yahoo! continued to depend entirely on Google for its search engine results.
In 2003 Yahoo! Became a fully original web crawler based search engine, this came with the introduction of a new crawler bot known as Slurp. Yahoo! Finally managed to integrate the information it had acquired form the companies it had taken over and create a single powerful search engine. This new set of web results generated by Slurp, were added to any site that had a Yahoo! Search facility built into it.
Once it was capable of generating search engine results for itself the deal with Google was terminated and the two once friendly companies quickly became rivals.
Case
studies 
web promotion