Is it worth upgrading my MacBook hard drive to an SSD?
Here is a good article about the experience a user had with SSDs: http://www.codinghorror.com/blog/2011/05/the-hot-crazy-solid-state-drive-scale.html

Basically 


  SSDs are so scorching hot that I'm willing to put up with their craziness.


but...


  Just make sure you have a good backup plan if you're running on a SSD.