From the home screen, after the user has logged in, users will be able to post an update and they are required to select one of the main topics "Current Events, Weather, Avoid, Emergencies, Missing" This is called "Your Stream" and it's a requirement. From their stream user will be able to post. Users who are their friends can also reply. Users will also have the option to type in their status, the name of a state (New York, Arizona) and Hilars will automatically populate it as a linkable tag thus grouping events by location. This will eventually expand to cities. When a user "Posts" their status it will show on their 'Stream' or page including the one picture that is currently allowed. It will be public. Pictures are allowed in their posts. There will be a persistent search located at the top where users can search for other users by user name. Visually it will have the collage, at the top, that's featured on the user's profile (ask for a login). This particular page will be the hub for many users and is the most important.
The second screen will be the "World Events" where it will have the linkable subcategories Current Events, Weather, Avoid, Emergencies, Missing. These categories should be right under each other, not next to one another. Each category will need to have a small picture indicating it's about "weather, avoid, emergency, etc" Every post that was posted with weather, for instance will show the posts about weather once you click the "weather" category. The weather screen itself is not a requirement or screen that must be created. This second screen is just the screen with all the main categories.
The third and final will be the Notification screen that will show unread or unchecked messages with a red number indicating the amount of private messages you have from users. The number of unread messages will be persistent on every screen irrespective of which screen you're on or selection but the third screen will have a threaded message where you can view, mark as read, delete, reply. The layout of the messages screen should have a small picture of the sender and below it their message. All screens have a minimalistic and obvious navigation at the top for users to easily go from one screen to the next.