+1, thanks for the link. Since the original article is more about Google, I would like to say that while Google's paid gmail+office is a compelling product tha

+1, thanks for the link. Since the original article is more about Google, I would like to say that while Google's paid gmail+office is a compelling product that I liked paying for until I realized that there was no way I could merge services bought with my "free" Google account with the paid account. I think this is a lesson for Twitter if they ever do offer a paid service: integrate well with the old free account or convert old account and history smoothly.