Going to a Conference?

Conference season is in full bloom in Atlanta. Your mailbox is probably just as full of invitations as mine is. What makes you decide to go or not to go? These are my criteria:

1. Does the topic interest me?
2. Do I want to hear these speakers?
3. Do I have time to attend?
4. Is the location convenient for me?
5. How much does it cost?

What makes me say “no”?

Three-day conferences (who has the time?) and hidden costs (who wants to go through menus with multiple clicks, and the need to provide contact information BEFORE the conference fee is revealed?).