I want that, because I find that great developers are very inspiring, they push me to work harder. I want to know what they're doing and their thoughts on stuff.
Seriously, why do I want to know every action or philosophic notion, some one has ?
People like John Carmack, notch, Tom Preston-Werner, Jonathan Blow, Michal Marcinkowski, Chris Granger, Paul Graham, Glenn Fiedler, Kael Rowan, Dustin Curtis, Cody Krieger, Bret Victor, Robert Pelloni, David Rosen (of Wolfire/Humble Indie Bundle fame) are my favourites because I have similar interests and goals as them.
If Albert Einstein were alive today, I would definitely follow him because I'd want to know what's he up to.