First things first: What a wonderful and intuitive product !!!
Now the BUT:
The HTML notes editor is a catastrophy. Pasting into the editor from any MS application (e.g. from HTML emails written in Outlook Express) very easily mixes up the editor and sometimes the whole system. I guess that any corrupt HTML pasted into the editor is not checked and repaired before it is written into the note. I experienced so many hickups with this editor that I hardly dare to use it with anything else then plain text.
note: FreeMind 0.9.0 Beta 13