I've wondered this same thing, zep! The only way you'll get a concrete answer is contacting the site. I've been here for just a few months, and, they want you to go to the forums, but, most are filled either with hate, or comments that don't pertain to your question.
Go to the source.
I'm still waiting for answers about other things......and we won't get real answers here.
Theoretically, these forums should be great. The reality is that some respond just to get worthless "points". Just look at the daily puzzles. "First", "Second". Give me a break....
Be careful, zep, I've had to block some after posting what I thought were informative comments, only to have some write crazy things-even posting on my homepage.
I think that it is only activated after closing the window. I created conditional moves while my opponent was moving once and nothing happened. I'm not 100% sure though, just what I've experienced.