Banners are an urban plague. In attractive neighborhoods, they distract from good design, like a South of the Border bumper sticker on a classic car. In developing neighborhoods they are lipstick on a pig, obvious and pathetic wishful thinking.
A couple of thunderstorms and your lampposts are festooned with rags. Put the money into a facade improvement project instead.
Image by Mike Licht. Download a copy here. Creative Commons license; credit Mike Licht, NotionsCapital.com