To me, the question is rather: "Is banner ads still a good form of advertising?". The only way I could answer "yes" to that is if users had a reason to click that banner, for example because they would receive something for it:
- Points for their personal sponsor
- A discount for finding that particular banner.
The reward would have to be something that makes people actively look for those banners.
In any other case, I'd argue we need a different form of online advertisement than banners.