Microsoft loses control over Windows Tiles
Microsoft service converts RSS feed to Tiles
With a special XML-based file format, web pages can control the content of the tiles; for example, they can show the latest news. To make it easier for web pages to provide this function, Microsoft ran a service that automatically converted RSS feeds into that special XML format. There’s a decent amount of traffic reaching this host and running up costs to hold the domain and block the corresponding subdomain even if we stop the web service and don’t provide any content.
Source: www.golem.de