With Yahoo site explorerer being permanently retired it is vital that you find a new source for your backlink data , as much of Yahoo!’s data would, by the end of March 2011, no longer be available.
Google, as you know, does not make much of it’s backlink data at all (only a very small percentage of your true links are reported by Google), and with the merging of the number 2 search giant’s Yahoo and Bing, you need to find another data provider
Yahoo has recently changed to use Microsoft’s Bing search engine as their provider of search results. Many have attributed this as part of the cause of inaccuracy in the yahoo back links recently (ie. they are now looking at Bing’s backlink data). Others have suggested that as Yahoo Site Explorer will be decommissioned soon, that the data is not as up to date, is not being effectively maintained, and is decaying rapidly.
You need to keep accurate back link records for your website.If your site needs a performance boost you need to know the starting point. With a cost effective internet marketing service.
Be Warned: Yahoo Site Explorer will be gone soon
