We've had this same problem at Blogvio. Users asked us why we need access to their entire Dropbox. And indeed we didn't need - but we didn't know better either.
After a bit of research we found out we can have a specific folder set to Blogvio that would sync with the system. And that, combined with something like Zapier is a much better solution that we envisioned first. Learning by mistakes! :-)
After a bit of research we found out we can have a specific folder set to Blogvio that would sync with the system. And that, combined with something like Zapier is a much better solution that we envisioned first. Learning by mistakes! :-)