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Please please please can you add a feature that allows folders to be excluded from the Dropbox account (on windows and mac). For sure I'm not the first person to request this, but I'm yet to find a g...
I'm all for the benefits .gitignore if you are using Git (which ignores folders by default) but I don't see how that would be a useful feature for the general Dropbox user base.
If there was an invisible .dropboxignore folder that ignored all photoshop files (*.psd) in all folders that would cause many support tickets from users looking for folders or files that forgot they ignored globally.
Maybe if it was an online-only setting that you could hide on a per folder/file basis using the contextual menu (menu > hide). But that would probably include adding a 'show hidden files' option online (next to show deleted) as well as a Account/Selective Sync (show hidden files) desktop option.
Not sure there is enough benefit for that type of change.