Full or Partial Contents of Posts – Which Should You Show?

You've likely noticed that some blogs show the entire content of their posts, while others show only the first part of the content, and include a link to "read more". Which format should you use?

Here is a good post on the subject, listing the pros and cons of each:

Full Posts vs. Partial Posts on the Homepage, from Pro Blog Design.

And, here is a good how-to post about creating summary posts (i.e., partial posts) on a WordPress blog:

Make a Summary Post in WordPress Blog Homepage, from web6.