Every online business owner knows the importance of a killer sales letter but not everyone knows how to write one that's worth reading - one that draws in the reader with their story and makes them want to buy. A killer sales letter earns its stripes by converting readers into customers 99% of the time. That's a pretty high conversion rate so let's just say your letter should be so compelling that it will keep your reader reading every word and purchase products from you. Eben Pagan was once asked why he sends out long ezines and he said something to the effect that prospects won't read every word, but customers will. The same thing can be said about sales letters.

Here are some easy to follow tips to learn how to write a sales letter.

- Harness the power of a attention grabbing headline: The most important element of your salespage is your headline. You have 3 seconds to grab someone's attention before they click on to the next thing. That's why the headline will capture the gist of your entire sales letter. I've often bought products on the power of the headline alone. Write your headline in such a way that when the reader reads it he stops dead on his tracks.

- Be friendly and approachable: You're not going to win many friends (and convert sales) if you're using technical jargon or difficult phrases. Instead be friendly and informal. Use everyday language (though slang is still a no-no). Look there are going to be grammar rules you can break in a sales letter that you wouldn't be able to break if you were handing in your PhD thesis but you still want to take care to write well. Don't be sloppy. Spelling errors and poor grammar always turn off prospective customers? even if they're not English teachers.

- Think about FAQs or Q&As: Questions and answers are fun and clear to read and can help move your sales letter along quickly. They also work to make your letter interactive and self answering to the customers? queries. A new trend is the psychic sales letter - which asks a series of questions and then generates a sales letter that is customized to the reader.

- Give a guarantee: Increase your trust factor (especially if you're unknown) by offering a solid guarantee. Your guarantee should convince the reader that you consider him valuable and help eliminate barriers to buying. You could a extend money back or cash back offer to the customer to gain his trust.

- Keep your sales letter to the point: Cut down on those long sentences and boring phrases. Use bullets wherever possible as these are the simplest to read.

- Summarize your sales letter in the post script: I mentioned earlier that I've purchased products strictly on the strength of the headline. I've also purchased products solely on the strength of the PS. Joe Vitale refers to the PS as a ?powerful statement? (rather than the traditional post script). And he's right. Often, I just glance at the sales letter and base my purchase on the PS statements.

Some other tips on how to write a sales letter are that provide trustworthy testimonials from other customers, cite your credentials, make your letter irresistible with discounts and free samples, and know all the different modes of payment so that you can offer them as options to your clients.