i am required by my land lord to have a "Beware of dog" sign, because i have a pitbull. i really dont like that fact, as i do feel it makes me more noticed, and feel its prejudice against my breed, when other residents are not required to, and my dog would not hurt a fly, but i digress. i have no gun signs, no stickers, no notice of any kind that i do, or do not have firearms. a few of my neighbors and i did not see eye to eye on the whole firearms thing, and to make a statement to me, 4 of them put signs saying their homes were gun free, and subsequently were broken into, only those 4 town homes, none of the others. and since guns are very valuable to thieves and criminals, it would more than likely cause more problems having a sign. and to the one posted how he hasnt been broken into in 20 years, i highly doubt the sign had anything to do with it. the right (or rather wrong) people have not viewed it.
and just a tip, as a rule, i never leave anything in my truck that has any worth. i want the most expensive thing a thieve would find to be the glass he shattered. i do not have any stickers on my truck that refer to firearms. although there is a Hooker Headers, and BRODIX heads sticker there. which i have sometimes worried might make it a target for being stolen, but so far, it hasnt gone anywhere.