For use with the new Blogger template.
Ramani Arunachalam (rarunach[at]gmail[dot]com)
You must be comfortable with editing your Blogger template.
This is the expandable post summaries implementation for new Blogger template with the additional flexibility of showing "Read more" link only for some long posts but not others. Note that this is different from peekaboo posts hack.
Follow the instructions in this page.