What's the difference between Facebook, Myspace and Twitter?

[T T]

I'm not sure if you want to use them for business or personal but here's my take on it from a business perspective:

MySpace: Can establish a page for business but check to see if your demographics use it for that purpose.

FaceBook: Great for business if you are using a Fan page because you can have unlimited amount of fans. The paid advertising is great because you can create a very specific target so only the people you want to reach will see your ad.

Twitter: The best for what happening now because you can easily do real-time searches with Twitter's advance search feature. Twitter can integrate with quite a few other social media tools. Meaning you can use Twitter to make updates to Facebook, LinkedIn, Ning, MySpace etc.