So now that Yahoo and Microsoft Bing has been combining their search forces for a while and Yahoo Site Explorer API is going down any day now (already gone?), how likely is it that the Yahoo Site Explorer or the data it provides is soon history? I've heard that the Yahoo SE is going to be migrated to Bing Webmaster Tools.. but will it give us as much backlink data after that? Is there any good alternatives to Yahoo SE? I was doing SEO competition check with Market Samurai and when I was checking backlinks it took me into some MajesticSEO website and I see they have monthly subscription fee. Is MajesticSEO any good?