Facebook is more better from other social networking sites, because face-book have much more traffic from other social networking sites. So In way you can use traffic to promote your business or site marketing. this will be more useful from another social networking sites

At this point, I think facebook is better than twitter. I can see the benefit of using both, though. I can track views of my facebook page, and I like buying small advertisements.

Both are having a great value in social sites and in my opinion both are best.

Twitter its totally business or official uses and Facebook for all of use. That's why my though Twitter its better then Facebook.

Yes Twitter is better then the Facebook. Twitter is best way generate the Large traffic of website.

In my opinion both of them are good.You need to use both of them, not just one ... :)

For SEO purpose Twitter is best coz PR -10 and lot of traffic on Twitter.

Twitter and Facebook both are best social networking sites. But it depends on your requirements because both have their own importance and unique uses.

Yes Twitter is always better than Facebook....

peoples are searching their needs Google as well as Facebook So I think Facebook is the best.

It depends what type of audience do you need..

Twitter is more faster and better than Facebook because twitter users are well educated and Facebook users are not creative and well educated. Twitter is the fastest source of news and it has great platform of marketing.

I think the comparison between both of them is not good.

Twitter and Facebook are both equally good. It totally depends on how you market things. If your site content is dynamic, something like news feed, then Twitter can be a better option. Same way if its e-commerce site Facebook is better option, because in Twitter you can use only limited Text whereas in Facebook, you do not have that issue.
More over its better if you can maintain both. But make sure, you make separate content for each keeping the constraints in mind..

Both of them are good for our work.