There’s an article up on vanityfair.com on a new online ad format that’s been making the rounds – the push-down. (You can guess what it does.) They also give a good overview of some other “newfangled” (i.e., not standard banners) ad units that are being used.

The key, as they say, is not to cross the line from effective to annoying. I’ve always thought that annoying vokens (those ad units that walk, fly or float across your screen) will turn readers off your site and brand – but then, they bring in more revenue than standard banners, and we all need more revenue from our sites.

What do you think about these ad formats?