Noticed this on my minifeed recently:
94 items from Twitter? This may well be an unintentional consequence of rolling up message updates per Facebook Application. Lord knows there are a lot of apps out there like Farmville that produce an incredible amount of noise. The natural way to limit the impact of other apps on the overall Facebook experience is to collapse these.
But at the same time, it is quite a profound way to greatly limit the effectiveness of other apps on the platform.
Facebook is well within its rights to do this. It certainly isn't new, too. It is advantageous behavior. Facebook activity is regarded as premium and gets more attention. As Twitter consolidates power and cuts out third parties from the attention stream by telling people not to create twitter clients anymore, it makes total sense that Facebook incentivize use of its own authoring tools.
Anytime attention is pooled together, there's value. Like water in a desert, creators of apps of all kinds will seek that attention anywhere it can get it. Whether it is after a Google Search or on a habitual reload of a StumbleUpon page, cmd-tab to Twitter App or dopamine-seeking Facebook visit.
It is a profound metaphor. As app creators, we seek this attention, and to pool it, to divert it, and to control it... Attention, like water, as life-giver. Attention, like water, as enabler. Attention allows us to create our cities and charge rent on the whole thing.
It so happens that some of the nicest cities to spend time in are created out of the public good (Craigslist and Wikipedia), while others are twisted up corporatocracies (examples left as an exercise for the reader).