Agreed about the "it just comes to mind" aspect of the site. I think it really helps that they picked such a great name for the service. It's easy to remember

Agreed about the "it just comes to mind" aspect of the site. I think it really helps that they picked such a great name for the service. It's easy to remember and tell others, and the name describes exactly what it does. I'm sure this has been a factor in the speed at which they're signing on new users. Dropbox is one of the best examples of great product naming that I can think of.