Cloud-based services are able to update and refine their offerings as frequently as they like -- no waiting for their user base to download software updates. However, sometimes users may not be aware of new features and therefore do not get full use from the particular service. Google's Apps suite (Gmail, Docs, Contacts, Calendar, etc) is subject to constant tweaking and extension. Users can keep abreast of changes by visiting the Google Blog, or more efficiently, signing up for an emailed update of posts relating to Apps updates.