Like Me? Follow Me.
What's it all about?Simply put, the 'Who to Follow' feature helps you to find others who have similar interests to you. These suggestions are based on several factors, most notably on the people you follow as well as the people they follow... not rocket science :)
Why are they doing it?Twitter are very conscious we are using their service to speak to friends and family, and they recently wrote a blog post on following your friends and colleagues. In it, they said that they were making improvements so that we can find our friends easier. So all in all the use of the 'Suggestions For You' feature is intended to make the job of finding friends and finding people who have similar interests, easier.
It can be difficult to keep in touch with everyone when you join a new social network. For example, I am a big fan of Foursquare, so I had a look at similar social networks and found Gowalla. I am just getting into it but can't find anyone I know on it, even though I do know people are there. Shouldn't it be easier for us to find then initially? For Gowalla, I guess I just wait for them to roll out something like this... hopefully.