Another day another report from market watcher Forrester (via Brian Solis) estimating interactive marketing spend over the next five years.

Advertising budgets will continue to decline and interactive marketing including search marketing, display advertising, email marketing, social media, and mobile marketing will grow from 12 to 21 per cent of spend.

The report is focused on the US but the headlines apply worldwide. The only surprise is that the shift to interactive isn’t more dramatic.