It should be saying "no information available" for those, as I haven't done the research on the transitional arrangements for Romania and Bulgaria that might be in effect (such as in the UK) until 2014.
That is correct, work visas are restricted, tourist visas however are not required and I am not aware of any such requirement between any two EU member states. I haven't used my passport in years, I use my Romanian ID card whenever I travel in the EU (and it is my understanding that any EU citizen can travel - for business or pleasure - within the EU without visas or even a passport).
I'll add that information shortly - for things like EU citizens travelling in the EU, I try to put a little more information than just "no tourist visa is required".