First the Feed was the the place where you could drag your Outlook Calendar entries on the matching projects in order to track the times you spent in meetings and calls.
Now the new timeghost update increases the capabilities of the Feed immensely. You will be able to configure yourself what you feed your Feed Because you can now add permissions from your Office 365 account for more Office Apps such as Word, Excel or OneDrive.
This will empower you to organize all the times spent in meetings and calls or working on documents and emails as conveniently as it gets.
Drag and drop and done!