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Bob would read through his news items using this interface. He would use 2 fingers to scroll up/down looking at the news items. he could tap on the "star" buttons to quickly mark items as significant, and "share" buttons to share the items in the feeds he made available in Hubbub (like Facebook or Google+). The items would be "cut off" if they are too long, so Bob would have to tap them to expand them or shrink them accordingly.

Items would be marked as read automatically as he visits them.

This interface is very similar to ones people already use to view information (Twitter, Facebook, reddit, etc.). In addition this format is very common for phones, so Bob will have little trouble learning how to go through his news items.

If he wants to mark a large volume of items (such as read or read later), it will not be easy or quick to do here.

There is nothing on this interface that explains how to mark something as read later. This is a preliminary sketch, so it is missing some buttons. Also, it is not clear how to mark items with a tag different from the "star" button.

To use this filtering interface for our above scenario, Bob would have to mark all of the programming-related posts from Google+ manually and in advance with a tag (like "cool code" or something). If Hubbub could infer the this pattern, the design would match our scenario.

We realized while analyzing this sketch for Design # 1 that this design too narrow on its own for adequate filtering for our user population, and we will still need an advanced search option to give users more control if we decide to implement this.

This interface is very easy to use. There are only items and check boxes, so Bob can quickly and easily try out some of them to see what they do if he's not sure.

This is extremely inefficient, because it only filters on things you've already tagged, aside from what sources to include.

We added this design to show that this idea is too narrow on its own for adequate filtering for our user population, and we will still need an advanced search option to give users more control if we decide to implement this.