Facebook Redesign Succeeds: Widgets Are Dead
One of Facebook’s main goals in implementing their redesign was to get rid of the clutter, which really means getting rid of the widgets and badges that sit on a user’s profile but didn't really do anything.
Nick O’Neill over at All Facebook created one such geegaw – a Bush Countdown Clock – as a joke when the platform first opened last year. Since Facebook overhauled the site's design, traffic has bottomed out (see graph below). Nick takes this to mean that widgets are dead on Facebook.
Why is this happening? Since the badges now go on the “boxes” tab and not on your main profile page, nobody ever sees them. And since they don’t actually have a way for users to interact with the application outside of the profile, users never see stories about them in their news feeds.
From Facebook’s perspective, this is great news – they want applications to be robust, not just one-off jokes that sit on your profile long after you’re done with them. For many developers, this means they'll have to find something else to do. The good news? The developers that actually want to build a business are responding to the changes.
See Also:
Facebook Users: You Get Until Next Week To Complain About The New Design
Is The Redesign Killing Facebook Apps?
Mark Zuckerberg To Facebook Redesign Complainers: Get Over It




Comments on status, shared posts, and other news feed items replaces wall posts. It invites conversation like a twitter without building another set of friends and followers.
Members need to opt-in the reporting of Facebook apps on the newsfeed. This is a huge barrier for the viral spread of apps.
iPhone version of Facebook displaces clumsy SMS feeds.
Facebook boomers have been slow to see these changes. Gen-Y gets it.
-Dash
http://adecon101.blogspot.com/
The idea that they did it deliberately to attack other social networks/aggregators, is flawed, I think.
I do think, though, that they deliberately wanted to reduce the prevalence of apps that don't *do* anything.