order items appear in ajax - por: zevstub

Hi. in what order do items appear in the ajax list? I'd like them to appear in descending date order- Latest item first.

Also, sometimes when I search an email address, I get a bunch of unrelated messages coming up. Any idea why?

Also, I see that when I press "post a message", the itemid is inherited from the current page. How can I remove that?

Thanks.