Setting up an MSN-XMPP account in !BitlBee
Microsoft claims that newer Skype clients should be used to access MSN, actually those contacts are reached using XMPP, not Skype's native protocol. Here is how you can see those old MSN contacts in BitlBee. (And not by using the Skype plugin.)
Connecting using OAuth
If your login is alice@live.com, use alice@messenger.live.com as login.
1 12:12:54 <alice> account add jabber alice@messenger.live.com
2 12:12:54 <root> Account successfully added with tag jabber
3 12:12:54 <root> You can now use the /OPER command to enter the password
4 12:12:54 <root> Alternatively, enable OAuth if the account supports it: account jabber set oauth on
5 12:13:03 <alice> acc jabber set oauth on
6 12:13:03 <root> oauth = `on'
7 12:13:06 <alice> acc jabber on
8 12:13:06 <root> jabber - Logging in: Starting OAuth authentication
From there on, just follow the on-screen instructions and you will be all set.