I'm a Mongo customer. Their customer service is probably the best I've had from an Enterprise vendor in terms of response time and general quality.

Unfortunately, the product itself is so poor I am forced to get the support, and even then I've managed to stump their senior engineers quite a bit with my "impossible" problems.

GS probably resells it to unsuspecting investors as a "AAA" database engine. :)

GS doesn't use it for applications that require massive scaling, they already have their own infrastructure in place for that.

That's what I was hinting at. MongoDB, the company, is trading on the Goldman name, but Goldman isn't using it for scaling at all.

Pick any company in the Fortune 500, then pick any technology you like and I bet it's in there somewhere. That's simply the nature of organizations with 100,000 employees in a dozen countries.