Eh-Wire writes "Doubleclick.com has an interesting 24 page PDF available covering the history of online advertising over the last decade. Interesting trivia include recounts of some of the first online ads presented on HotWired. Online advertising has become very competitive in the last ten years and last year saw a revival of activity in this form of advertising. The usual selection of graphs and charts are there to pretty up the document. Overall an interesting read if you're into that sort of thing."