Do want.  You can never go wrong with split screen co-op except only if you have no partner or a crappy one then its your fault and not the game's.

My mind will be blown if Uncharted 3 has Split Screen.

This would be so great for a guy who loves to play Split Screen with his brother and friends.

Killzone 3, Resistance 3 and now please Uncharted 3 for Split Screen :D

I'll finally get a 2nd PS3 controller if it's split screen campaign. 

Excellent! Far too many games lack good splitscreen these days.

If it really does have split screen co-op I only see increased sales.  Even more so if it's online too.

Art continues to imitate life to squirm-inducing effect in Curb Your Enthusiasm DVD's seventh season. In Season 7, Larry contemplate this future with an ailing Loretta, and decides on a novel approach to winning back Cheryl. Cold Case DVD In addition to Larry finding himself embroiled in usual cauldron of self-made crises, he orchestrates a reunion with the entire cast of Seinfeld! It was really wonderful. Weeds DVD If you are a Seinfeld fan, you must see the last episode of this season even if you do not like this show. I am a fan of both so was in heaven! There are just so many funny things this season that any reviewer could write a small book about the joys of Season 7. We open with his girlfriend having breast cancer and Larry's wanting to end the relationship. Medium DVD Somehow he manages to find a therapist who ends up blaming him for the cancer! The major thing you discover doing this is how much of Seinfeld was Larry--tons. The Good Wife DVD When George (Jason Alexander) and Larry come together, it is clear that George WAS Larry. They are mirrors of one another, willing to obsess and argue over any minutiae. 

I'll be buying U3 for the story for sure, but I'll definitely try this out if to see if its good, I wonder if you'll be able to play online split screen just like in R3?

Could be good but on the other hand it could negatively impact the fantastic action movie moments ND integrate into the normal action - such as you suddenly being on a collapsing platform, etc.

I think it would be terrible to play coop on a first play for sure, but I guess as a for fun second play it could work.

Not convinced for Uncharted's style of gameplay though.  There are lots of other titles where I feel coop would make more sense.