Complete Your Profile :
Firstly you have to fully complete your profile. You need to complete every possible fields of your field so that people will get necessary information about you.
Add Connections :
You can add Facebook, Twitter, Google with your Digg account. It will help you to share your submitting link to these social networks.
Keep Yourself Active :
You need to keep your active in Digg in order to get followers. Active means you need to submit links and digg someone others sharing urls frequently. It will attracts the eye of other users of Digg.
Follow others :
Just follow some other users on Digg. As a result sometimes they will follow you back. Again you will some unique idea about them whom you have followed already.
Digg Button :
You can add direct Digg button with your post in your website or your blog site. So that people can directly digg your url to their account.
Comment on Others Submission :
Commenting on other peoples submission will help you to make them interested about you. If your comment is good and related it will be perfect for you to get followers.
Digg Profile Link :
Digg you the option of unique profile link which will not be matched with someone others. So that you can share and advertise it to the social networks like facebook, twitter, myspace, google plus etc. It will help you to increase your followers.
Youlikehits will be a perfect way to increase your digg followers. This will help you much more to increase it. Just set your digg account as you digg profile link. Set a high range points to follow your account.