The deadline for posters (and associated with this also for tips, techniques and courseware) was extended from March 11 to March 18.
Why? This year, we received a very large number of very good submissions - more than we can possibly accommodate in the conference program. For many of these, it would be a shame if they could not be presented to attendees, but there is a limit to the number of papers we can sensibly offer at the conference. We have therefore decided that we will invite several authors of (very) good papers that did not fit into the program to submit a poster about their idea, tool, study, or approach.
Additionally, everybody else is also invited to submit a one-page poster (which is a refereed submission and included in the proceedings, if accepted!). However, we noticed that the original deadline of March 11 collided with the ACM SIGCSE Symposium. Since many potential conference poster submitters are also likely to attend the Symposium, this is very unfortunate - especially for those authors who want to strip down their paper submission to a poster, but are unsure how they shall be able to accomplish that. By extending the deadline by one week, we hope that everybody's life will become a little bit easier, and that it will also lead to more (and more high-quality) poster submission. "Everybody wins" :-)
I look forward to your poster submissions and to meeting you in person this summer!
Dr. Guido Rößling, March 3, 2011