Yahoo search is better from my side. Though i frequently use www.google.co.in, because of my firefox plugin(aggregate google and yahoo results), which aggregates the results to be obtained from google as well as yahoo in a single page. \nI do it because i need to get more search results to avoid the mistakes of missing relavant research content.\nYou can install this firefox extension to have the better search results in a single shot. http://releases.mozilla.org/pub/mozilla.org/extensions/aggregate_yahoo_and_google/aggregate_yahoo_and_google-1.0+-fx+fl.xpi\nwhen ever i compare the results, some times its unbelievable that yahoo is more relevant to what we are thinking off. \nI mean for the keywords that are ambiguous, or related to more than one particular field, the first page results are always to the context in what we are searching for. For ex: if i type "document" as a search keyword in the context of knowing what a document is how it constitutes, its genreal structure, etc; google will get some irrelavent results in the first page itself, but the yahoo results are almost perfect to the context what i am searching for.\nI came to know that yahoo searching is based on artificial intellegence. You can browse to the site http://mindset.research.yahoo.com in which the search results are divided into ranges of academic and business interest and depending on the range selection results will differ.\n\nBut only problem with yahoo is its search interface is not so attractive as google is. and moreover google is faster than yahoo sometimes.