Not to keep harping on PPLD's Website Improvement Survey, but I can't help it. I've resorted to promoting it on our slide show. We're up to 53 responses, some of which are friends of mine I emailed.
I feel pretty good about the responses so far, but I need more comments!!
This is really the primary disadvantage to online card sorting exercises. I can't hear what the user is saying/thinking so I'm not sure what their motives are. Comments are helpful, but I'm not getting enough of them.