Frank L.

I have read the reviews and know the pros and cons of this service. Now for my thoughts.
1. Use the free version. Too many stories about billing problems here. Sure people are more inclined to write when there are problems, but there should not be so many stories here. One is too many and any more than that is crazy.
2. Do not store anything you can't get back. They don't sound very trustworthy. I would not risk it.
3. Careful with shared materials. I shared some ebooks for business years ago and somehow got a notice to unshare that particular folder. I don't know who's looking at my data, but what I do with it is my business. Especially when it has to do with MY business. Have not had that problem with Box, Google, or even OneDrive. And I trust MS less than anyone!
4. Be careful with ALL cloud services. There is no protection like your own, so back up EVERYTHING and TRUST NO ONE.

Using Dropbox to share innocuous docs with coworkers and friends is ok, but do not swear by it or come to count on it. From one Certified Ethical Hacker to everyone else.