Unless you have a good reason for forcing really terse questions (even shorter than Twitter's 140-character limit), please, please make the tiny text input into a textarea. Or if you want to be fancy, start it off as a one-line textarea but expand it if I start typing more. I have to write my question somewhere else and paste it to actually be able to read it back. Otherwise, really great job hustling to get great people for these AMAs.

Edit: I guess the questions do have to be short, but there wasn't proper validation/notification when my question was too long (it just took me to a blank page to reask a question).