I don't know if other webmasters have noticed buy Yahoo back links checking is far more sophisticated than Googles, its regularly updated, the back links are arranged in order of site importance and it lists far more sites than Google's back link tools.

backlinkwatch is best tool for backlink checker.. try to check manually best..
In google search engine "siteurl" ( with out http://)
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I am always prefer the two most important tools these tools are Backlink watch and backlink analyzer...