TwiTip has put together a great comparison of Facebook and Twitter. The post highlights the key differences between the platforms and how they can be used for social networking, online marketing and plain old keeping up with friends. The article is definitely worth a read. I use both, and I see Twitter as more of a marketing tool where Facebook is a traditional social network. Twitter's short-burst character limit allows me to keep up with more people while the folks that I follow on Facebook are closer to me. Facebook has more of a familial feel to it while I use Twitter as more of a news feed. I don't use Facebook for marketing purposes, but Twitter is the perfect place for that. So, how do you use Twitter and/or Facebook? Is one more valuable to you than another from a marketing point of view?