Just like an iPad works as a door stop.

edit: heh, downvotes. I am not a "css purist" there are times when tables are the correct solution, but they aren't here. Just because "it works" can be said that doesn't explain/justify their use.

Assuming you don't care about blind users, yes.

Do you really think that the only reason to use CSS over table is because of purists? CSS is much easier to manage than tables and css frameworks have fixed all issues related cross-browsers problems.