At the Google I/O conference this week, applications for Google's Linux-based Android mobile platform are generating buzz. Recently, we looked in on 10 of the Android applications that earned cash prizes in Google's Android Developer Challenge, and we've been taking note of the promise there is for many types of phones based on open source. Now, at the Google conference, numerous other slick Android applications are causing observers to pronounce the platform ready for prime time. Paul Kapustka, over at our sister site GigaOm, offers a video demo and some thoughts from Google I/O. He sees three reasons why Android may run into problems. Check it out.