Marco Arment:
I’m happy to announce that I’ve sold a majority stake in Instapaper to Betaworks. We’ve structured the deal with Instapaper’s health and longevity as the top priority, with incentives to keep it going well into the future. I will continue advising the project indefinitely, while Betaworks will take over its operations, expand its staff, and develop it further.
I'll admit I was shocked to see this, but I can see why Marco took this path. Just from reading his blog about how much time it take to work on The Magazine, I couldn't imagine how he'd find time for Instapaper as well.
Instapaper is one of those apps I have had a long relationship with, and one I hope will have a continued and wonderful future. Congrats, Marco.