Launching tumblr referral widget is very simple with invitereferrals.com. If you are not signed up with InviteReferrals already, you’ll need to do so. Please sign up and create a referral campaign for your Tumblr blog first. Sign up for free now !!
Follow these steps to add InviteReferrals integration code to your blog:
1. Customize your blog theme
Tumblr dashboard > Customize
2. Edit HTML
Customize > Edit HTML
3. Copy-paste your InviteReferrals integration code into Tumblr’s HTML and save
First login to the site and then copy the code so that the secret keys are already prefilled.