Kind of interesting that ChaCha.com is capitalizing where search engines fall short...a live person to step you through the reference interview. I like the name of the company, reminds me of the dance moves, you keep moving back and forth not realizing you're really going anywhere until you step back...kind of romantic.

Rethinking Google's system Human-powered search premieres

It was bound to happen...but now with a business model. Why can't folks just ck their local library? I know many in my area actually have something similar without all the banner ads. I checked out their site and it looks as though they have been overwhelmed. Didn't Google already have something like this going on at their site.