I have a general dislike and suspicion of door-to-door traveling salesmen (or web site to web site). I resent their knock on my door. I resent their arrogant intrusion.
If I want info, if I want to buy something I'll search for it.
Hang your open for business sign on YOUR door---stay away from mine.
IF what you have is so profound--"viral" as you suggest impressively--your success is guaranteed.