We do.
We have stuck up people in our neighborhood that walk by our house and threaten to call the cops because my dog barks at them... he doesn't even leave the yard, but if people walk in our yard(since we don't have a sidewalk on our street), they tend to think Frisk is coming after them, when really, he won't get any closer than four feet from them.
We have a No Tresspassing & Dog on Premise sign.
Since we've had the signs, only one lady has walked in our yard and actually yelled at us that my dog was vicious and was near to attacking her(he wasn't).
I hate some of the people in my neighborhood.

I only have a Beware of Dog sign on my bedroom door.. as if Ethan(my dad's dog) sleeps with me, he gets protective. Just a warning to visitors not to open my door when he's in there. =)