I think you're taking a bit of a leap with what I said. I'm not saying it's only the idea that is important at all, I'd be the first to argue that ideas are act

I think you're taking a bit of a leap with what I said. I'm not saying it's only the idea that is important at all, I'd be the first to argue that ideas are actually worth next to nothing by themselves. What I was trying to say was that their idea and their implementation are solid -- specifically I'm saying the part of the implementation that counts is solid. Server infrastructure problems are a minor detail compared to the app itself IMO. And to the last part about the mashable article... I would absolutely say that article is 'severely dating' itself. Twitter isn't going anywhere (again IMO) and some server problems aren't going to change that. In a year that article will be a slightly less embarrassing "no one will ever need more than 640k of memory" piece of writing.