"Stop Spamming" Scam?

[Barry Roberts]

I just got back from a week-long vacation, and I had to (quite rude)
messages in my inbox from companies demanding that I stop spamming
them.  One even said thay had signed me up on 500 spam lists.

This was on my work e-mail address.  Not only have I never spammed,
but I've certainly never done it from work.

I assumed at first that perhaps these companies were so clueless that
they didn't know what a forged header looked like.  But then I noticed
that both messages linked to online payment companies.

Are these companies (stormpay.com and evocash.com) actually hoping
that I'll contact them about this, and end up being a customer?  Or
are they just trying to drive traffic to their sites?  I don't get it.
Does anybody know what the scam here is?

Thanks,
Barry Roberts