Bjørn Johansen

Usually when you click a permalink (“read more”-link) to a post, the link contains a “#more-” at the end, making the browser jump down to the “readmore” mark. You might not want this behaviour, so this plugin removes the anchor from the link.

Remove More Jump

Removes the anchor from the permalinks ("read more"-links), so you don't jump halfway down the page.

Wooliet

“Read More Right Here” uses the jQuery framework already included with WordPress installations. RMRH hooks into the WordPress creation of the 
“more” link and adds a custom class. When your blog is loaded, all links of this custom class are modified to no longer send the user to that post’s 
single page display when clicked. Instead, the WordPress database is queried for that specific post, and all content after the  tag (i.e. only what you need) is returned. 
The new content is then immediately displayed to the user, inline with the opening content.
For more information, please visit the <a href="http://www.wooliet.com/wp-plugins/" rel="nofollow ugc">Woolie T. WP plugins page</a>.

Remove More Jump vs Read More Right Here