Building a solid analytics platform is often a combination of real-time and batch processing. Batch processing, with a tool like Hadoop, is great for digging into large amounts of past data and asking questions that cannot be anticipated. In contrast, when it is known ahead of time that certain aggregates will be required, the best solution is usually to count each event as it happens. Livecount makes it easier to address this second use-case.
Why should you have to log in to facebook to see photos intended to be shared with the world? Do we want Facebook/Google/etc to dictate what users can to with their content? I decided to borrow some photos from my facebook account (those from my mobile uploads album) and make them available here via the Facebook API.
Check out my Facebook photo experiment. (2010-present)