Pit them on street signs and lamp posts in outdoor market places where cars aren't allowed and people have to look at them. Farmers markets, mall areas, concert venues and parking lots make great places for promat. And it helps more if you place the promat at a certain height to where people HAVE to see it. Like something I do a lot is when I sticker up a parking lot, I'll place the stickers on a light pole that directly in front of a parked car so that whenever someone pulls into that spot they're forced to look at the only sticker on the post in front of them. Other perfect spots include walking trails and at museum placards. But even without going to such great extents, people see our stuff all the time. Even if you don't notice them, others do.