I actually don't mind Twitter's mobile app for the most part. It is simple, but does most of what I need. However, I've ran into one cosistent frustration:

Notifications.

My experience goes something like this:

I get some push notifications from twitter and I see a count on the app icon and I open it to see notifications on a single account.

That's all fine.

The problem starts when I have notifications on multiple accounts. I go to the switch accounts screen and the is zero indication which other accounts have notifications.

I have to imagine this is a common frustration for users with multiple accounts. Providing a simple count of total notifications would completely solve the issue. Alterantively, they could also provide specific information about what type of notifications are unread.