I don't think the GP would disagree with you. I believe he was asking what specific apps benefit today (besides GMail which was mentioned in the blog).
I'm guessing you're right. I was responding to the tone of "Nowadays...overenthusiastic" — in support of enthusiasm — and to the notion of naming specific current apps — which I'm imagining as the puck's current location.
We may not even be equipped to answer that question. There are a lot of web-based but private & internal corporate applications that we'll never know about, and can't hope to name.
"A good hockey player plays where the puck is. A great hockey player plays where the puck is going to be." — Wayne Gretzky