I just had another one of those seemingly silly idea that could end up being popular, well, at least among advertisers.
Empty Space Ads
Every web page has empty spaces which are normally dead areas. Why not use mouse clicks in those areas to popup or navigate to an ad? When I tried it out, it feels like accidentally falling between cracks and I ended up paying more attention to the ad than normal banner ads. And since I was the one who did it, meaning self-inflicted, it didn't feel as irritating. Weird.
Tooltip Ads
Web pages have lots of areas that just does nothing. Why not display small WordAds like Google does in a tooltip when the mouse hovers over those dead areas for a while?
I am not into advertising but I thought above two ideas could be useful to some people. I get too many ideas, you see.