If one clicks the #Discover tab the returned results are supposed to be somehow based upon "following" and "followers"
Mine is totally returning random results, yours?
Twitter might be in need of deeper algo changes.

Excerpt form PCWorld

Twitter is making some changes to the Discover tab. Essentially, Twitter is attempting to deliver more relevant, personalized content that incites users to interact and stay engaged on the service. Customizing content is a double-edged sword, though, that involves some degree of privacy infringement--or at least erosion--to achieve.

Read from source:
[pcworld.com ]