The Anscombe Centre is running what looks to be a really good conference on Double Effect [PDF] on Saturday, February 19th, 9:30-17:30 GMT. They'll be accepting questions by email (and a selection of the email questions will be asked by the chair). They ask that you send an email to firstname.lastname@example.org if you're planning on attending electronically. No registration fee for online attendance, but they do accept donations.
Here is a fuller schedule.
I'll be there virtually, albeit sleepily, starting from around the second talk (the first starts at 3:30 am my time). If anybody wants to chat with me during or between sessions, go here, and make up a nickname (ideally one such that I'll know who you are). (That's not an official conference venue.)