+Søren Siim Nielsen
Nothing in there talks about selling stuff. They use it to promote their stuff. I just don't like the ask once policy is why I don't use it.+Karl Smith
Exactly what is Vague? https://www.dropbox.com/dmca#terms
By using our Services you provide us with information, files, and folders that you submit to Dropbox (together, “your stuff”). You retain full ownership to your stuff. We don’t claim any ownership to any of it. These Terms do not grant us any rights to your stuff or intellectual property except for the limited rights that are needed to run the Services, as explained below.
We may need your permission to do things you ask us to do with your stuff, for example, hosting your files, or sharing them at your direction. This includes product features visible to you, for example, image thumbnails or document previews. It also includes design choices we make to technically administer our Services, for example, how we redundantly backup data to keep it safe. You give us the permissions we need to do those things solely to provide the Services. This permission also extends to trusted third parties we work with to provide the Services, for example Amazon, which provides our storage space (again, only to provide the Services).
You are solely responsible for your conduct, the content of your files and folders, and your communications with others while using the Services. For example, it’s your responsibility to ensure that you have the rights or permission needed to comply with these Terms.
We may choose to review public content for compliance with our community guidelines, but you acknowledge that Dropbox has no obligation to monitor any information on the Services. We are not responsible for the accuracy, completeness, appropriateness, or legality of files, user posts, or any other information you may be able to access using the Services.
If you are talking about paragraph 2 look at paragraph 3 they ensure they will not use anything without your permission and that includes any 3rd party they work with. So if they want to use something of mine with a specific purpose other than what is already outlined they must ask. While Google's policy is we ask once regardless of what it is. That's a huge difference my man.