Did you loose your bookmarks or cookies? I have some cookies I use for dedicated sites so I don’t have to keep a list of all my passwords.
I don’t believe you can bookmark anything yet. Plus I use LastPass and it doesn’t support that either. Fast though.
I just installed it. It doesn’t appear to have affected Firefox at all. bookmarks and cookies are still working in Firefox. I’m sure they would be sued if they disabled Firefox in anyway.
I don’t think it imported anything from firefox. I see an import bookmarks from HTML export option.