Content teasers allow you to make a summary of the post public and hence available to be indexed by the search engines. This brings traffic to the website and the visitor will need to sign up and pay to access your membership and view the entire content the post.
To maximize the success of this approach you should ensure your teasers (excerpts) :
- are properly SEO'ed to get the most traffic you can
- are not too short
- are persuasive enough to engage the visitor so that they decide to purchase
- do not oversell the post content and hence leave the buyer feeling duped
- make a time based offer of sort (e.g an expiring coupon code) to encourage the visitor to take immediate action