Allright, check this:
-The movie has been reported to have cost various amounts. It was initially said that the production cost was $260 M, but the director claims he managed to have only spent $204 million on the whole film, while other articles have claimed that it was actually $225 mil.
-Now the DOMESTIC Box Office numbers have yet to 'par' or go past any of these^ numbers, as it currently is sitting above $190 mil. (And last I checked it was still in the box office top 20) In this sense, it commercially under-performed. (or "flopped") But at the same time, Superman was going against Pirates of the Carribean 2 during its first month out. (And that film took in $100 mil within 5 days)
-~BUT!!~ WORLDWIDE, it has taken in over $345 Million dollars, which easily pays off the film's debts and advertisment deals with some extra $$$ to whomever.
- Considering this is all so far, after a 2-3 month period, and it has yet to come out onto DVD, (Which I will be buying the Ultra-Mega-whatever edition of) I say it didn't do as great as some expected, but it managed on its own.
- Finally I'll say that this film did well with a majority of critics, and that this was the Summer movie for me. (Which I have seen 3 times so far.

With one of them being from a *******-download site.) I'd absolutly think a sequal would be greatness, IF they change out the actor for Lois Lane, and do certain things better while making this film than the first time around. (Including taking out some of the "cheese" and "corn.")