What do the tabs mean on the 'Home' feed?

The Sociall newsfeed is split into 3 sections, All, Following and Discover. The 'All' feed is where you'll find every post that is posted by Sociall users in a chronological order. The 'Following' feed will only show the content posted by people you are following and the 'Discover' feed will feature accounts based on interests you select. You can change your selected interests at any time via your profile.