Looks like Microsoft is go head-to-head with Google Scholar. Given my cursory browsing of the database, it seems to me Google Scholar has more references, but MS gave me a $5 Starbucks gift card for taking a look, so it wasn't wasted time.

I guess this explains why about 80% of the videos on my favorites list at YouTube are gone. YT was fun while it lasted, but it looks to be going the way of Napster, especially since Google bought it.