http://forums.digitalpoint.com Incoming Google Links:5,360 Incoming Yahoo Links:444,083 Incoming MSN Links: 28 Incoming Alexa Links: 1,876 Overall Incoming Links: 451,347 (Overlap is possible - Estimated 444,083 unique links) Outgoing Links: 696 (Ratio: 7.701% - Each Link Receives Approx. 0.007 PR) For more details http://www.urltrends.com/viewtrend.php?url=http://forums.digitalpoint.com
No, the reason for the discrepancy is that each engine only shows certain amount of backlinks. Google publicly acknowledges that they only you show you some of the BLs for your site. Yahoo is generally considered the most reliable in terms of showing all/most of your backlinks.