mihai

When you show partial posts on your main page or archives and you have “read 
more” links, clicking those links will redirect the visitor to a position in 
the post. The visitor will not see the post from the begining. This is bad if 
you have an ad at the top of your post cause the visitor will not see that 
anymore.
This plugin will modify the default behaviour of the “read more” so the visitor 
will see the post from the top when they click the “read more” links.
More info:
<ul>
<li><a href="http://patchlog.com/wordpress/the-whole-post/" rel="nofollow ugc">The Whole Post plugin</a>.</li>
<li>Check out the other <a href="http://patchlog.com/wordpress/" rel="nofollow ugc">WordPress plugins and mods</a> by the same author.</li>
</ul>

The Whole Post

jneuveglise

This plugin will cut your RSS feeds at the “more” tag. It will enable you subscriber to see what you want them to see as on the home of your blog.
It will also add a customizable link at the bottom to the complete article and optionally a fully configurable footer to avoid robots to steal your content.
It will not work if you choose ‘partial’ feeds in the WP configuration.

RSS No More

This plugin will cut your RSS feeds at the 'more' tag or custom [rss-cut] tag and optionally append a footer to each article on your RSS fee …

The Whole Post vs RSS No More