User forums are a hot spot for gearheads and racing enthusiasts to gather and share information or bench race.  The more popular forums see thousands of user hits per day!  That's a lot of potential business for your company.

While I have no control over what the individual forums charge for advertising, I can give you the advantage when it comes to the advertisement itself.  Ad banners are seen all over the web and are a great tool to inform, advertise, and round up new customers.

Nowadays, advertising in the phone book is probably not gathering up any clients for you.  Short of trade-specific publications that may or not be read by everyone, your ad banners are featured only on the sites you want them to be. Since you pick the websites to advertise on, they are directly aimed at your target audience.

The cost of the banner is more than offset the first time you get a hit from a new customer.