On this page you can change your time zone, or add a signature that will automatically appear at the end of every message you send.
Lets you add a picture (photo, avatar) that everyone will see on messages/contacts list.
Contacts (folders etc...) management
Here you can specify some details of your contact page (colors, information to display).
This page lets you change your corlive.com password and your email (not required, just in case you forget your password)
You can also change so called "API password".
API password means a readonly access, right now useful along with corlive.com RSS.
It should be different than your main password.