Everytime we publish our monthly Techvibes Start-Up Indexes, there are always a few complaints about the use of Alexa and Compete data for ranking the websites of start-ups. While we agree that it’s not an accurate measurement of website traffic, it is a great way to compare the traffic of different online properties as it creates a level playing field for metrics. Our inaugural Canadian Start-Up Index on July 1st received the usual anti-Alexa comments, so we decided to consult with a recognized Internet information provider – comScore – to see how the top websites on our Canadian Index measure up. In the attached chart, the Online % Reach is the percentage of Canadians online that each entity reaches. As an example, Metrolyrics.com reached 7.7% of all Canadians aged 2+ online during the month of May 2008, making them the hands-down leader. Nexopia, which ranks #12 on our Canadian Start-up Index, leapfrogs everyone and grabs the #2 spot on the comScore list with a reach of 5.6%. That’s a lot of teenagers. Thanks to comScore for sharing this data with Techvibes!