Compete.com's monthly traffic scores for August are out. Below is a graph of the top 39 penny auction sites by unique monthly traffic. We see that Swoopo and Bidcactus are far ahead of the competition and that the distribution of sites follows a long tail pattern. So does this fit the Chris Anderson "selling less of more" philosophy of ecommerce 2.0? No, not really, more of a coincidence I think.
One of my friends made an interesting point when I showed him this chart. What if Swoopo owns Bidcactus, he asked. While we have absolutely no reason to believe this is true, it does make for interesting dinner table conversation. What if, in order to dominate the market Swoopo opened a second site, which happens to have a very similar color scheme and aesthetic, and funded that site from their own operations. Bidcactus does spend a huge amount of money on AdWords, after all.
Either way, I think I'm going to start calling Swoopo "Coke" and Bidcactus "Pepsi." The Dr. Pepper Snapple Group of the group has yet to be decided but there are a few strong contenders including BidRodeo and Rocky Bid as well as newcomers For10Cents.com and Winners24. This is actually the first time I've visited Winners24 and their site looks pretty clean.