Burstly just announced that they have acquired TestFlight. Congrats on both, it shows how mature the mobile market is becoming. Besides the acquisition they also announced TestFlight Live, a product to see how your app is performing once it has been published.
I think this is a step away of what they have been doing until now, which was all focused on the phase before launching. Also it is a crowded space: there are already mobile analytics companies like Flurry and app download companies like Distimo and Mobapp.
Meanwhile, we at Mobtest.com keep on focusing on our mission: to build a great marketplace where mobile developers can find testers. Developers need feedback on their apps before they push them out in the app stores. They need to get high ratings to do their marketing in the app stores and get interested users to actually download their app.
We are looking for beta testers of our own service, so sign up at mobtest.com to get an invite. First batch is 50 testers, so sign up quickly!