You can install MSN messenger as a plugin at least on Maemo OS2008 and Fremantle. This means that you can use devices integrated messaging software to chat with your friends at MSN.
 Questions and answers
- Will you be able to view messages that you have received while offline like you can on PC?
- Yes, its the same history and the same UI as other IM protocols
- Will it support MSN Video calls?
- Yes, on the N900 using butterfly (not with Haze).
- Can you leave MSN running in the background and receive instant messages from multiple people while doing other things on the phone?
- Yes, just like when using other build-in IM protocols.
- If i am for example watching a movie, will a message pop up saying I have an instant message from a contact?
- There will be support for MSN games?
- No. For now, they are not supported by papyon/butterfly, but someone could implement them.
- Where can I download MSN Messenger for my Nokia N900?
- Install it from extras-devel through the Application Manager. The name of the package is MSN Protocol Plugin For Conversations And Contacts and it is in the networking section.