Tragically, everything I hear out of Yahoo! and Bing is that Site Explorer is off to the great beyond. The expense of maintaining a web index isn’t something Yahoo!’s willing to invest in once they don’t have to, and Bing’s given no indication that they’re going to re-open the portal to link information. The best we can hope for is an acceleration in the functionality offered by Bing Webmaster Tools, but even that’s unlikely to offer competitive link intelligence.

I’m guessing other services will rise up to try to take Site Explorer’s place, as the service had millions of monthly queries run against it.