Marketing Sherpa has posted a couple of charts addressing 2006 online vs offline marketing and ad spend. It's a pretty interesting little take. Not sure how accurate it is, but it's looks like they have pulled strong sources such as DMA.
Currently PPC is leading the online area, and that's not unexpected. Hooray search marketers and Google stock! SEO's are in there too; hooray SEO's!
Offline spend still dwarfs online spend, but I would venture to say that over the next 5 years or so, that these trends will reverse.
My thinking is that traditional offline stock of advertising and marketing mediums like newspapers and such will reduce drastically in the next 5 years. Perhaps The New York Times and Wall Street Journal will only be printing 3-4 days per week, forcing advertisers and marketers more and more to online. Of course, there will always be billboards, cheap T-Shirts and logo-pens.
A huge shift to online adspend and marketing mediums seems pretty logical - let's see what happens.
What do we all think?