Four years ago, I used my PC World blog to write about Glide, a “Web OS” that I said might be the most ambitious new service of 2005. Glide was trying to move much of a typical user’s computing experience from the PC to the cloud–even though the idea was so new at the time that almost nobody was talking about cloud computing yet. I said that the service was promising, but rough around the edges and frequently confusing. While Glide hasn’t ever become one of the Web’s household names, it’s continued on, adding gazillions of new features and repeatedly reworking its user interface. So I’m overdue for another look.