i believe that the xmpp is a protocol thats already installed into pidigin and plugins use it like the gtalk ? but correct me if am wrong ... is the 'pidigin' am talking about is the same as the one we access by clicking the clock area to set online/offline/busy status ? i mean the default im in n900 ?
about WhatsApp and a password being sent; All I got when using it via nitroid on my n900 was a text message with "+447624803777: WhatsApp Code 000". The code are just three numbers (not 000 of course) I couldn't find related to imei# nor telephone#. Whether this is supposed to be a password or not - dunno. ...Oh yea and I didn't got it to work on nitroid to actually send the messages. At least they are not received by the contact as they are with Symbian based on WhatsApp on a e71.