Post to Future Help

Hi.

I’ve recently discovered the post to future aspect of wordpress 1.5. Its great. Being able to change the time stamp and have it appear only when that time stamp arrives is nice.

However I have a question. When I post to the future in this fashion, when does the sites I wish to ping get pinged? When I first hit publish now, or when It appears on the site?

If it pings them now, I’m afraid of getting hit with a spammer tag, if I work on say 1 weeks worth of entries before going on vacation (as I plan to do soon).

If it pings at the times its posted that’s great. ?? can anyone help?