Welcome!
feedly weaves Twitter and Google Reader into a magazine-like experience.
feedly uses Google for its authentication service and integrates with Google Search
so you will need a google account to login to your feedly.
feedly is integrated with Google Reader so any article you read in feedly will be marked as read in Google Reader and any article you share in feedly will also be shared in Google Reader. And vise versa.
Click on thein your firefox toolbar to access feedly.