I ask myself this every time a website starts using one. IMOH all that it does is slow everything down. The latest is my "yahoo" email, which has been my main account since 2001. Rather than simply deleting a message, I chase that delete button all over the screen and often need to exit the account and log back in again. Conversely because the da&&ed thing jumps around so much I have caught myself deleting things I want to save. It also takes similar messages and combines them, although they often are from altogether different senders. I know that I'm old and set in my ways, but I can't understand the need to change something just to screw it up.