6. Participate in online communities like newsgroups, discussion boards, e-mail discussion lists and chat rooms. You will meet many people and in return they will get to know you.

7. Donate your time, products, or services to charities. You can list charities you've contributed to on your web site. This will show visitors that you and your business care about others.

8. Promote yourself offline; teach a free class offline, speak at business seminars, join a business club or association. Assemble fundraisers for charity. These are just few ideas to promote yourself offline.

9. Offer free consulting to your visitors. You could do it via e-mail or phone. They will get to know you and feel more comfortable buying your products.

10. Publish information about yourself and business history in your ad copy. While people are reading it they begin to trust you and your business. Don't over do it though, you want to keep them interested in your product.

6. If you're selling an electronic product, like an ebook, include your ad for your back-end product somewhere inside electronic product.

7. Give your customers a free membership into your "customers only" private site. You could include your ad for your back-end product somewhere inside private site.

8. Contact your customers by phone and ask them if they were happy with their purchase. You could tell them about your back-end product.

9. Send your customers a thank you letter by mail or e-mail. You could mention your back-end product somewhere on letter.

10. Ask your customers if they want to be updated in future when you have new product offers. You could have them sign up to receive e-mail or snail mail updates.

Your business will have a greater chance of surviving when you attempt to sell back-end products to your existing customers.