Ca$hvertising is brash, in your face, and packed full of the kind of advertising advice it could take you a lifetime to assemble. However, all the advice is based on studies of the American market, and there is substantial research to show that not everything that works there actually works here.
The brash writing style is the first thing that hits you with Ca$hvertising, and this stays with you right from the title to the end of the book. But, once you get over that, this is not a collection of unevidenced opinions. Rather, Drew Eric Whitman draws together more than a century of research and the best advice from all the greats such as Ogilvy and Starch. This is held together by Whitman's own (rather bargain-basement) experience, which works nicely with is in your face style.
If you're thinking that the heavy bias towards low-value campaigns and direct mail is a weakness, think again. In
Ogilvy on Advertising, David Ogilvy argues that no-one should get involved in big budget campaigns until they've cut their teeth on direct response classified ads. He also argues that there is a formula for writing great ads -- but he doesn't quite tell you what it is. Ca$hvertising has none of Ogilvie's reticence. Although it claims 50 secrets, it's actually more like 250, because many of the secrets are actually collections of principles.
I would recommend this book 100% to anyone in the USA getting into advertising, and to any seasoned campaigner wanting to brush up their skills. I can't quite do this for UK readers, because there are some genuine cultural differences which have a big impact on advertising response. Where Americans want the appearance of honesty, British audiences want the appearance of cleverness. There's good research done by the Advertising Standards Authority on what messages work in Britain. Unfortunately, this isn't in the scope of Ca$hvertising. The bottom line is that you need to have a reasonable amount of advertising experience to be able to gauge what will work in the UK (which is most of it) and what won't.
Still a book to read and keep on your shelf, though, if you are planning to do DIY advertising, or if you're an advertiser wanting to brush up on what you already know.