http://bannedbooksweek.org/ and a Facebook page at https://www.facebook.com/bannedbooksweek This is a US (particularly American Library Association) organised event, but e.g. you can post your favourite "Banned" title on the Facebook page.
I am part of a Banned Books Week panel Free to read, taking place in the virtual world Second Life on 1 October at 5pm Second Life Time = US Pacific Time (1am Tuesday in the UK! see http://www.timeanddate.com/worldclock/fixedtime.html?iso=20121001T17&p1=234 for times elsewhere) on Community Virtual Library Exhibition Area http://slurl.com/secondlife/Info%20Island/61/94/24/. Other panel speakers on intellectual freedom are Pat Franks, Valerie Hill, Jane Bering, and Monika Talaroc.