Dakota Air Parts are notorious for spamming. Their unsubscribe links have never worked for me and requests to be removed were ignored. They use email harvesters to automatically scan aviation related websites looking for email addresses. Their systems automatically collect the addresses and then they send out the spam.
So far even their ISP has refused to shut them down, and several other people on the web have complained about them. I wrote about
Dakota Air Parts on my blog. What is funny is that if you search for them on Google my site comes up near the top.
