Pull/push: I believe he's talking about the difference between a consumer asking for information and a company flooding you with it. The first is pull, the latter push. Pull is the future--pull, if I understand all of this, is Neomedia. Pull is Paperclick; pull is aiming your cell phone camera at a bar code or ad or product in a store and finding out something about it on YOUR schedule (at which point companies can provide coupons, offers, try to establish relationship, etc.) Push is unsolicited telemarketers--which turned so many people off they had to pass a law the restrict it. Push is the text-message ads I didn't ask for and started receiving one week after I got a cell phone capable of it. My response? Shut off text messaging.
It's all about individual choice and control these days, from blogs to marketing.