I would have to agree with everyone here and say facebook. Even those who oppose fb seem to be accessing it from their smartphones. The ease of use for facebook and twitter on mobile phones gives them a huge advantage. They are both great for marketing tools.
I'd say it depends on the product you want to promote using them. For a media related product I choose MySpace. Almost for everything else I choose Facebook. I would give all of them a try anyways.
Facebook, I think its always better for your corporate identity as it allows you to customize several aspects of your account (not style settings) but photos, polls, blog entries, also I think people prefer such networks as almost every people following you on facebook are real people and not fake ones such as twitter could be for you...
I think facebook is now become one of the finest social networking website. Which is always concern about their features and privacy. And keep users getting involve more in website by developing and introducing more and more eye catching updates every day. So in my opinion facebook is my first choice As i am also a developer of it
Facebook is the best social networking site if you are willing to promote your brand and drive more traffic to your site facebook is the one.
Man O man its Facebook. Huge number of active user and also number one site which swept down google. Facebook is also too good for games it includes.
MySpace used to be the place for bands and teenagers so marketing to them still makes some sense even nowadays; Twitter with it's older public looks like a niche compared to Facebook. So, I vote for Facebook, too! It's the most generic, the greatest and most varied public, so, like it or not, you have to be there!
Facebook has really ramped up its networking features. Before it used to be just a simple place for people with similar interests to, well, network. Now, they are filling it up with additional options like apps, and instant messaging, forums, photo tagging and more. Facebook also allows you to send whole photo albums to friends even if they are not members of the Facebook community.
Facebook is best, but has few things which I don't like. So maybe someone will create something better than FB
Well, facebook is popular nowadays, so my vote is also goes to facebook. But I think, any social networking site can help your site one way or the other. Its just depend how you used it and of course the quality of your post that can attract viewers attentions.