Great, could be perfect with a little more work Rated 4 out of 5 stars

Great add-on, but adding a little more flexibility to the file renaming and moving functions would be helpful. Specifically:
<br>1) it would be great to have Zotfile be able to add a tag (like new) to the file name (based on a Zotero tag)<br><br>2) it would be great to have the file destination (when adding a file) be customizable to mirror the zotero storage folder. Ie: if the citation is stored in my root/CDS/GLINDA/MMDA folder in Zotero, then Zotfile would move the file to a [user-selected root folder]/CDS/GLINDA/MMDA folder on my OS (and create that folder if it does not already exist).<br><br>These functions would make ZotFile work seamlessly with DropBox and DropBox-syncing iPad readers/annotators such as PDF Expert.

This review is for a previous version of the add-on (1.6.4). 

check out the zotfile 2 beta, which has many features to streamline the process of working with your tablet through dropbox and even extracts the pdf annotation added in PDF Expert of with other readers:

http://forums.zotero.org/discussion/18737/3/zotfile-reader-zotero-plugin-to-work-with-tablet-ipad-android-tablets-etc/#Comment_111985