Lots more: http://www.quora.com/What-are-some-startups-using-Meteor
To me this just smells of bubble, of too much money for too small projects / markets. Of course Meteor could start expanding to new products and do something unrelated to an MVC framework, but there's no mention of that right now.
Visit http://meteor.com/about and you will find this:
> [...] a new platform for cloud applications that will become as ubiquitous as previous platforms such as Unix, HTTP, and the relational database.
Meteor is not "an MVC framework", it is a platform for creating applications. The investment seems to reflect the ambition described on this page and after having watched them execute over the past two years, I'm glad they're funded, because it clearly enabled them to continue working on this without running out of steam and having to go back to their old jobs.
They have also been quite open about their future plans for making money, such as in the post announcing their funding back in 2012: https://www.meteor.com/blog/2012/07/25/meteors-new-112-milli...
> Eventually, we plan to make a commercial product too, called Galaxy. Galaxy will be a product that the operations department at a large company might buy. It'll be an enterprise-grade, multi-tenant hosting environment for Meteor apps.
Meteor has some really really smart people working on it, and they've repeatedly stated that they plan on monetizing by providing hosting/deployment services (a la WordPress). WordPress is a billion dollar company, in case you've forgotten.
As a Meteor developer, I would pay for a solution that allowed me to use Meteor's collection of magic on a platform that was built specifically to take advantage of said magic.