Palleman,

I still don't see a benefit of multiple logins. Since you are using same login information on all places (computer, N900 etc) as soon as you login to one machine you will be able to converse with people online. Why would you have to wait for hours ?? Say you are working on computer and talking with people online but then you have to leave ....you can just log off from MSN on computer and login on N900, you'll be able to communicate without any issue.