It IS dangerous.
I did it for 2 crummy operations and the best operator Aerial Sign.
I watched 2 great pilots die in separate incidents.
It IS a job, it will give you time that, in certain circles, might help. If you're looking for anything besides time building, it's all worthless single engine VFR without cross country. There are a few CC banner runs but they are rare.
Why do it?
1. Money, it's better that minimum wage (starting at $10 from what i saw recently)
2. Experience. The majors and regionals may not care, but It's a great story and CAN be a fun time.
Why not do it?
1. If you are risk adverse. I don't care what company owners will tell you, it IS more dangerous.
2. If you have a better offer. Even pipeline patrols have x-country.
It is a way of life, most banner pilots has little intention of going to the Majors
CE