How to Find Friends on Tumblr
Tumblr is an online blogging service that lets you quickly share short updates, photos, videos and more. The Tumblr website also can be used to keep track of updates that your friends post to Tumblr. However, to use this feature you'll need to start following some friends. You can locate your friends on Tumblr by importing your contacts from Gmail or Yahoo Web-based email services.
Open your Web browser and visit the Find Your Friends page on the Tumblr website (see Resources).
Log in to your account using your username and password, and then click the "Log in" button.
Click on "Gmail" or "Yahoo" and enter your account information, giving Tumblr permission to grab your contacts and examine them for common names in the Tumblr database.
Click the "Follow" button next to the friends and acquaintances you'd like to subscribe to. Each time you log in to Tumblr, you'll be able to read their latest posts.