I think this is going to have a pretty substantial impact on the service. The power users who create a lot of the content on Twitter are very likely to be using

I think this is going to have a pretty substantial impact on the service. The power users who create a lot of the content on Twitter are very likely to be using 3rd party apps because the official app (and web version) are, in my opinion, completely unusable. Constantly switching the timeline view back to "Top Tweets" in order to surface more promoted posts and 'popular' tweets is annoying on any service, but doubly so on Twitter which is the platform where I expect to be reading the most current discussions.