In OpenSym 2017, we made several changes to the way the conference has been run:
* In previous years, OpenSym had tracks on topics like free/open source software, wikis, open innovation, open education, and so on. In 2017, **we used a single track model**.
-* Because we eliminated tracks, we also eliminated track-level chairs. Instead, **we appointed a series of Associate Chairs or ACs**.
+* Because we eliminated tracks, we also eliminated track-level chairs. Instead, **we appointed Associate Chairs or ACs**.
* **We eliminated page limits and the distinction between full papers and notes**.
* **We allowed authors to write rebuttals before reviews were finalized.** Reviewers and ACs were allowed to modify their reviews and decisions based on rebuttals.
* To assist in assigning papers to ACs and to reviewers, **we made extensive use of bidding**. This means we had to recruit the pool of reviewers before papers were submitted.