If a bankruptcy is filed and you had $ or BTC at bitfloor, you should be included on the list of creditors, and you'll get periodic mailings about the progress of the matter.
Now we are getting to the really interesting stuff. If BitFloor does not have any information on how to contact you, how will you get periodic mailings?
If some other legal action is filed, there's a pretty good chance you'll be included as a party, which would mean you'll get copies of filings,
See my question above.