I don't see how it's difficult to sign on to yahoo messenger or any other messenger.They have to sign on with an email to log in to facebook don't they?or maybe I have forgotten cos it's been awhile since I deleted my FB.. If they don't have the messengers downloaded on their PC maybe they can sign in with the account you made through http://www.meebo.com/messenger. You can log in through all the messenger services via meebo. You just make them the account and send the email addy with the password and the link to the site. Volila!! easy.. If they can use FB I'm sure they can log into meebo.Hope this helps