It happened that Bungie.net's seven-day online game stats weren't detailed enough so Sam Radakovitz, a program manager on Microsoft's Excel team and his colleague Joseph Chirilov, developed a spreadsheet-based system that collects data from Bungie's RSS feeds and show data beyond that of the developer website's including average kills, deaths and rankings over time. As a matter of fact the system is flexible enough that can be refreshed constantly and display the data in charts and graphs.
According to Radakovitz, speaking to the Seattle Post-Intelligencer, the spreadsheet began life as a lunch-hour project which caught the attention of his fellow Halo 2 fans at Microsoft, and subsequently became a popular draw on his personal website - even receiving links and praise on Bungie's own news pages.