We hate spammers and will never spam. If you ever get a spam and it appears to be from bikersusa.com, there are imposters out there who will do anything to promote their junk. Using email trickery to pose as someone else is a serious problem and a felony in the USA.
How to check to find the source of an email. In outlook express, click on file then properties. In Mozilla Thunderbird, click on view then message source.
Copy the header information that appears and please report imposters to email@example.com