Grapevine has it that skype will announce their nokia client here at 3GSM – free calls on 2.5G and beyond.

Push from GSM Association to provide interoperable instant messaging – with sim based authentication and presence mgmt, besides low spam because caller pays.

Makes me think – will the future PC be a mobile phone as in having a SIM card (or phone dock) and hence provide equal ease of use and integrated services…