if any developers are looking at this check out mumsms+ (s60 app) it really personifies what everyone wants from a app of this nature...

i.e. filteration of text messages dependant on specific allocated contacts/numbers both sent and received...this should be automatic..and onli accessible from the application which filters the messages to itself and this should be coded with a password/pin

and btw some need to hide messages from girlfriends that mums done approve lol...hence probably "mum"sms+