Dropbox: What is Packrat?
dropbox.com
dropbox.com
After all, the man most likely to value hurricane insurance is the man whose house was just blown over by one.
There's value in a solution that makes copying your data to multiple systems drop dead easy and automatic, and Dropbox is in that niche. If you need more {robust|reliable|scalable|detailed} file history, it's not right for you. But you can bet there are tons of people in Dropbox who delete things a lot (just like I have met people who store "important" email in the trash folder)