As far as I can tell a simple freemium model would have worked. You charge for the firehose and anything high volume, but you give a generous free allowance to

As far as I can tell a simple freemium model would have worked. You charge for the firehose and anything high volume, but you give a generous free allowance to keep the grassroots ecosystem healthy. They could have played all the same pricing games that Facebook is now playing, except across a much wider range of channels. I'm not saying it was a slam dunk, but a lot of talk about this back in 2007/2008 and there was a palpable excitement about Twitter apps. Within a few years the media-company mindset had taken grasp, the valuations and expectations exploded, and now we have boring old Twitter which is still a damn cool thing in its own right, but which is seen as a failure because of a combination of pedestrian vision and mismanaged expectations.