The Super Bowl is one of the most prestigious – and expensive – advertising opportunities available to brands. Last year, 46 minutes of ads were shown during the FOX telecast, and some $1.72 billion has been spent by advertisers on the Super Bowl in the past 10 years.

On Sunday, a 30-second ad spot will cost a heady $3.5 million. So, the big question is: what sort of buzz are marketers getting for their money?

Social monitoring firm Brandwatch have created a live, interactive website that tracks all the sponsors involved in Super Bowl 2012, presenting the results in an engaging visualization.

As the site explains:

Each football-playing worm represents a sponsor and the number displays the number of tweets made about that brand or their products over the last 28 days – the brand who’s worm has the ball is leading the charge!

Currently, Volkswagen leads the way, and by some distance, with almost twice as many tweets as second-placed GM.

The site also tracks Twitter sentiment and brand ad spend, and you can mouseover any “worm” to see the most recent tweet.

Also see: Which Team Leads The Twitter Pre-Super Bowl Buzz? [INFOGRAPHIC]

(Source: Brandwatch. Top image credit: Alhovik via Shutterstock.)