Kevin: Google is definitely starting to find some clever ways to drive HTML5 uptake. One way is by helping to develop interesting interactivity using the emerging web standard. In this case, they have worked with Arcade Fire to develop a video that pulls in your location and "mashes up the film with Google Maps and Street View". The video also allows you to write a postcard to "your younger self". This is driving new levels of real interactivity, and it will be a great time for storytellers.

Kevin: Mathew Ingram looks at investments in companies trying to build a business in the Twitter ecosystem. As Twitter itself seeks a business model, it's making it more difficult for other companies to build their businesses off of providing Twitter services. It's a fine line. Twitter wouldn't have experienced such growth if it hadn't been for the eco-system that developed around it, but Twitter also needs to find a sustainable business model or the heart of the eco-system will die.

Kevin: Sarah Perez writes at ReadWriteWeb: "According to ABI Research's Neil Strother, check-in apps may raise privacy concerns among some users today, but those issues can be overcome by offering consumers deals, discounts and rewards. The "value-exchange" of receiving these rewards will be high enough that consumers won't mind giving up privacy in order to take advantage of the benefits."

Kevin: The BBC uses Ushahidi's new cloud-based service, crowdmap, to map reports surrounding the London tube strike in September 2010. It should have had a filter not just as to what form of transportation but also whether the report was of a problem or of alternative routes to avoid congestion or suspended service.