I've watched this with interest, because you were going about what I had determined to do from the beginning. My intention with Facebook was to be very selective about who I interfaced with there - friends and family and people I actually knew in person. But soon I found that others would send me a friend request and it wasn't in my nature to turn them away. I see Twitter as just a big news headliner (kind of like what rolls on the bottom of the TV screen when you watch CNN or such) so I didn't care who followed me, but I do care who I follow. Twitter, to me, is a business necessity; Facebook is a social gathering.

However, I have found that I get more traffic for my blog and more responses for my events from Facebook than Twitter or any other such tool. I believe the reason has more to do with who I'm "friends" with than because Facebook is necessarily a better tool. My "friends" on Facebook are more likely to read my blog because of that personal connection than those on Twitter who are just looking to up their number of contacts.

I tend to ignore voicemail. I ignore email sometimes, too, but I rarely ignore a facebook comment. :)