Cloud-storage service Dropbox has announced something called Dropbox Comments.

The new feature, which was originally available to paid Dropbox for Business customers via an early access program, lets you add notes to hosted files. You can also mention people (type "@", followed by a person's name or email) in order to let others join the conversation.

"With comments, you can now have conversations around Dropbox files, both on the files you own and the files people share with you. This keeps your conversations organized in one place, and provides a way to gather feedback in just one step," explained Dropbox in a blog post.

When you mention someone, they’ll get an email notification with a link to go right to the file. You'll also receive an email notification when anyone comments on a file you’ve shared. You can always unsubscribe from notifications, if you wish, as well as manage the conversation. If it’s a file you shared, for instance, you'll have the ability to turn off comments.

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Another feature is the ability to make changes with Microsoft Office files: "If the comments are on a Microsoft Office file and you’re the owner, you don’t even need to leave the browser to make the changes. Just click the ‘Open’ button to edit the file in Office Online or in the desktop app," Dropbox said. "Your changes will be saved back to Dropbox."

Dropbox Business users were already allowed to edit Office files directly, but now all other Dropbox users can finally edit Word, PowerPoint, and Excel files stored in Dropbox from their browser, eliminating the need for desktop software.

Dropbox Comments is now rolling out to all our users today on the web. It's also coming soon to mobile.