The language used in the sales letter format should be simple, and suited to your trade. Complicated or complex writing leaves the reader confused and unlikely to read your letter or take action and buy. When a letter writer includes any bonuses, they should be supported with the word "free." For example: "FREE article submission with every SEO article!"
In this article, I'll give you a few tips that your should consider with respect to your cover letter format. It always amazes me how many people truly miss their opportunity at desired jobs because they motivation letters that have sub_optimal formatting.