It's not about which is better, it's about being on EVERY social media platform because all of them have users who are potential customers/readers/followers etc.
twitter is just simply awesome for the simple fact that I can have more followers and be able to follow more people than on facebook..
This is true, and also not forgetting that different social network sites work better for different people.
I work with both, they are just like two arms for me. If you cut one then you can't work properly with the other one. It's better to stop discussing on this topic.
In most people, facebook is more popular because of the features that it has. Using the fan page feature of the facebook is one of the most used in SEOs. But I also think that twitter can help your site. In these social networking sites it can help your site with using it right and posting a quality and interesting things that would attract viewers.
Both are good, but I'm not a fan of twitter so Facebook is what I always used. And I really enjoyed my stay in that Social Networking site.
Facebook is far better than twitter. It's a huge network and gives complete information about a profile. One can share and build its business on facebook.
if you are talking about social networking then facebook is best and if you want something for marketing purpose then nothing is best then twitter
My short answer is Facebook. Why? Because more people visit facebook then twitter and you can get more traffic from facebook then twitter.