Why are Madonna, Britney Spears, will.i.am and others in our Hacker News Circle?
plus.google.com
plus.google.com
Here's the Hacker News Circle, in case you still don't have it in your circles (it's really worth it): https://plus.google.com/106419647632534512037/posts
Now granted they could probably care less and I probably never would have looked anyway, but it works for me.