Users can now send an instant message or make a Skype call direct from Outlook
From V3:
Users can message any of their Skype contacts directly from Outlook, while Skype can also be used to initiate a voice call to mobile and landline numbers as well as direct Skype-to-Skype calls.Microsoft integrates Skype and Outlook with Skype 6.1
Microsoft said that the integration allows users to call anyone whose contact information is in Outlook, even if that person is not a Skype contact. However, calls other than Skype-to-Skype sessions require Skype credit or a subscription, as usual.