We use Twitter for server status and news reports. I really stay away from Facebook. Every time I follow a link to that site, it's usually password protected. Really doesn't feel like a welcoming site to me.
No Doubts! Facebook leads because it has much inbounded features like social networking in superb style
Twitter for quick posts and microblogging updates, Facebook for a full social networking experience since it allows you to display a full profile easily, and it has more features.
Well, I have account in both of them. But I use Twitter mainly. As its easy to get followers there. - Digital -