Cars.com hosted what it’s calling a Big Game Blitz, an online Super-Bowl-focused game is for auto dealers and OEMs only. We heard about it by way of a link that was included in our daily e-mail alert from NIADA’s Automotive News.

To play, a dealer or manufacturer had to register, then pick a series of eight question before each week of the playoff schedule. Players then assigned their own “Cars.com confidence” factor to three of his or her picks — Gold, Silver and Bronze. If he got it right, he earned five points for a correct gold choice, three points if a silver choice was correct, and Bronze earned two points. Other picks were worth one point if correct. Players needed to check back on the site weekly to see if they won. They could also create their own private league and challenge their colleagues. There was even a Trash Talk message board so members can talk online.

It’s a clever way to create loyal online visitors, and the Automotive News e-newsletter is an excellent marketing choice. Read our earlier report on Cars.com and other Super Bowl advertisers’ plans for the 2010 game.