I would second this, while I am sure there are many on here in which Objective-C fits the way they think, I personally would hate to have to use it for the server side of the equation. Apple and before that NeXT did a lot of work to make developing UI based system, with Objective-C easy. The efforts for anything on the other end of the pipe seem to be more developed out of necessity than inspiration. Cappuccino, which is external to Apple, and has created Objective-J (GWT for Objective-C) seems to have put more inspirational work into Objective-C for the server side, that being said, it's still not my thing, but I know others that have used it and love it.