Messenger Plus! Live is an add-on for Windows Live Messenger that adds tons of features and extras to the software. But Windows Live Messenger 9, was not compatible with Messenger Plus! Live. An Till now there is not official release for Messenger Plus! Live and a lot of users was asking if is any way to fix this problem. Till now the only thing that I can recommend is a private beta (build 337) that work with WLM 9. So if your friends nicknames comes with bbcode now you can fix it installing this add-on.
Download Messenger Plus! Live (beta)