I think what bakry2003 is trying to convey is the day to usefulness of a cross platform im app such as cnectd and whatsapp, because they are data oriented apps and data plans tend to be cheaper than calling and sms plans(at least in Venezuela).
I'm aware that nokia has the ovi contacts app...
...the smart phone market these days is no longer limited to a few brands and everyone has their preference of OS. With that said, what these (cnectd and whatsapp) apps are trying to do is to integrate the different MOBILE OS on to one unified app, they both already support andriod,symbian,blackberry and apple.
One may argue that msn already does that but i think we both know that msn isn't optimized for mobile phones, the compression is far from great which leads to high data consumption, and that defeats the whole purpose.
I know it's not up to maemo developers to port this app due to the fact that its closed source, but i think we have a loud enough voice to persuade apple to develop a maemo version