I've run into a few guys with ADV stickers who seemed to have no clue about the site, and / or were generally unfriendly and / or fucking weirdos that made my skin crawl. I've run into more that were cool cats, but it's the oddballs that stick in your mind. When I worked for the university PD, I was on the main drag in town, like 2 in the morning, when a kitted out GS makes a turn in front of me. Had Michigan plates and a shitload of ADV stickers and a FYYFF sticker. He stops, and looks at a map, and I roll up next to him (in a cruiser), flip him the bird, and yell: "ADV, huh? Fuck you, you fucking fuck!", with a big ol' grin on my face. He looks shocked, and a little scared, and says: "what did I do officer...?". It's kind of awkward explaining to someone what the sticker on their bike means, after you have just scared them into thinking that they have done something so heinous that the cops are rolling up and screaming profanities at them.