I'm sure a lot of people asked the same question when competitors to Netscape hit the scene, and look at how much they've changed in that time. I've only read

I'm sure a lot of people asked the same question when competitors to Netscape hit the scene, and look at how much they've changed in that time. I've only read a little about RockMelt, but it's not clear to me why they didn't develop this as an extension ... aside from perhaps being able to claim the search revenue.