Ditto. The minute the official Twitter client started sending irrelevant notifications I uninstalled and switched Twitter clients.
Interestingly enough one of their 5 things this quarter is going to be "improved developer support". I wonder how they'll balance this with third-party Twitter clients that intentionally filter out official marketing efforts.
For me the result was uninstalling Facebook. The app was showing daily notifications for people it thinks I could follow, with no options to disable the feature.
This was fixed at some point, so I guess the user feedback got through.