Where did they fail besides Siri? The rest look like fine achievements to me.

Netscape was the market leading browser into the early 2000s, corresponding with JG leaving it.

Never heard of Tellme, but it sounds impressive on a resume.

Metaweb was a good open-source fact database which subsequently got walled off once Google bought it.

Google Search works significantly worse now than it did under Amit, and I say that as both a user and a websearch Xoogler. (JG took over about a year after I left Google).

Siri is the subject of this article.