http://www.youtube.com/watch?v=m8ss6NVp8wo
You've probably witnessed one of Google's spring cleanings when it retires a dozen or so popular services. Ever since co-founder Sergey Brin took the CEO role from Eric Schmidt, who is now Google's chairman, the company has been dropping less popular services at a rapid clip. iGoogle? Gone. The ill-fated Wave? Killed off. Wonder Wheel? That too.
Newsflash: even Google has a finite amount of resources so some features inevitably get thrown under the bus along the way. Google's Matt Cutts in the above clip lays out his company's approach to managing products and explains the decision making process which leads Google to retire some service whilst continuing to invest in others...