Might be bordering obsession here chaps. Is 'retrobike' that hard to remember if you meet someone on the trails and they show an interest? Offering a business card sounds a bit 'scientologist' to me.
As for putting stickers/tags on random bikes. If I got back to my bike and some website had stickered it up, I'd be logging on to give them a piece of my mind, not offer a cuddle.
As for putting stickers/tags on random bikes. If I got back to my bike and some website had stickered it up, I'd be logging on to give them a piece of my mind, not offer a cuddle.