However, there's nothing at all wrong with "marketing-speak". It's based on psychology: people skim, bolding is used to emphasize importance, and money back guarantees - well, they're exactly what they mean.
For most things, I personally prefer easily digestible content over blocks and blocks of text.
Very few articles on the front page of HN are littered with testimonials and sales copy.
EDIT: I'm sure a few people people are skeptical. Here's a screenshot from ejunkie (and I just crossed over the $1k mark): https://dl.dropbox.com/u/2205912/Screen%20Shot%202012-08-23%...
Assuming 3 sales/hr directly from HN, that is encouraging.
I don't know how anyone can verify 3 sales/hr from HN only from that screenshot, however. Sorry my thirst is unquenched, it's just this whole deal reminds me of ClickBank sales where fudging screenshots and hyping and bullshitting others is fairly commonplace.
I would believe 1 in 7 overall users click through, but I'm still curious who is doing it because I am a jaded, jaded marketer.
Total uniques for the main article: 7,772 Total uniques for the sales page: 1,238 A 2% conversion rate (26 sales) isn't that far fetched. It was converting higher with the pre-HN traffic (about 6% on average).
So long as the product being sold is legitimate, usage of that styling and copy is more than acceptable as it's a proven way to increase sales and conversions.
Marketing != Evil