Seriously spam merchants, I have a contact form for actual contact purposes. Only a couple of weeks ago, I had someone use it to contact me to tell me she’d found my wallet, which I had been tearing my hair out trying to find. (Thanks Donna and Michael! )
There is a message on the contact page which quite explicitly explains that I do not appreciate it being used for spam, and that I do not want to be “cold-called” by people offering to send traffic to my site or to improve my web presence. If I wanted these services, I would look for them myself; you’re not going to get business from me if you just spam me with a copy-paste email.