Google is at the forefront of digital communication, why not be part of it? They use web 3.0 technologies, which means that information shared to you will be of relevant and interesting to you. The inviting interface will allow you to manage basic day-to-day activities.
Organised your emails with labels, stars and ‘important’ settings. Features such as Gtalk, Buzz and to do lists are also available through the gmail interface.
Probably the best online calendar available. Easy to use. Invite and share amongst peers. This calendar is ideal to sync with your smart phone.
Google+ personal and pages
The next frontier in social networking. Clean (very clean) interface that allows you to target you social communication to specific Circles of users.
Google+ of course works while with Google. It can help your brand reach that top search in Google, if utilised properly.