Just thought I would poke my head in for a couple of comments. I use Twitter from a laptop and the "Who to Follow" suggestions are now appearing on the right side of the screeen. I"m sorry that I don't know when it changed and if it's in a setting, but it is there.
I don't do a lot of tweeting from my phone, so I can't answer for if or how it shows up there.
Twitter can be what you make of it. You can follow TV shows, actors, singers, celebs, sports personalities, etc. It just depends on what your interests are. You can always follow someone for a while and then unfollow if you don't care.
I follow accounts associated with the university I work with, the local news personalities, weather people, sports people, singers, actors, etc. Twitter is a good way to short, quick amounts of information that you can then investigate further if you want. I've received replies & likes from a few celebs & local TV personalities. Kenny Rogers has "liked" a few of my tweets. Got birthday tweets from Thomas Gibson & Joel Murray because my friends asked. As a fan of college basketball, I follow some of the people associated with it, like ****** Vitale. I'm a nerdy geek so I follow the weather guys and they post things at times other than just local news.
One of the cool things with Twitter is you can follow regular people who share similar interests to you too. I have made Twitter friends with people all over the world.
Of course, as with all social media, most all of it is regular people with their own opinions, so sometimes you just have to take it with a grain of salt.
I hope this answers some of your questions and helps you out.
--Jeri