I wave, when I see them. I don't go all nuts about it, it's either my hand at the top of the steering wheel and fingers flying up to wave or my hand is out the window already and I actively lift my hand up and wave. I have wave stickers on my windshield too, green hands with one on each side. I got tired of never getting a wave back from Liberty's and most Cherokee's so I don't tend to wave to those. If they're modded, I will... just to cover my bases. Most times the non-wavers (of the Wrangler style) are JK owners - especially women, sorry to say it but it is true. (I am a woman, so that makes me even crankier.) I keep waving anyways hoping they'll get the hint maybe or wonder what it's about if they see it often enough from enough jeepers. *shrug* I'll also admit to the occasional foul word or angry look when I don't get a wave back, but in the end it ain't a big deal... life goes on and the world keeps on spinning on its axle.