This is a great plugin but it has some problems in the latest 2.7.X of WordPress:
1) It places the Related External Links on both Pages and Posts. It would be good to have a choice for either Posts, Pages, or both.
2) The related links are automatically placed on all posts and pages, even if I do not use the <?php Ext_related_links(3); ?> code. This seems like a bug. If I do not use the code, it should not show, right? It should only show if I use the code, right?
3) I worry about server load. Does this use some sort of caching system? It seems like if I have lots of links and lots of posts, then the server will spend lots of time parsing. Is there a way around this?
4)Also, here are some suggestions for the admin area:
a) Maybe only allow 50 keywords per page, and then start adding more pages for pagination.
b) Also have a search so that admin can search within keywords and urls if there are many pages.
c) allow for maybe more than one keyword to be added at a time. Is it possible to have an array so that up to 10 can be added?
5) The output of the list and title are set in the plugin, but that would be good to be able to place HTML before and after the list to better add it to themes. Also ability to add a title in the admin section is a great idea!
This is a fantastic plugin and I hopes the details I provide can make it much better!!