Hi, what's the best way outthere to display related posts by category displaying a thumbnail of the post. Thanks
http://markjaquith.wordpress.com/2009/12/23/new-in-wordpress-2-9-post-thumbnail-images/ Then call up 'posts per category' and put it all in the various template files - functions, page, index. If you want all the exact code sent to you and help installing it then PM me and we'll come to a solution
If you are talking about related posts wordpress plugin then you may check here : http://orangecopper.com/blog/the-best-related-posts-plugin-for-wordpress it will give you an entire list of plugins to select form. In my opinion the best is : IGIT Related Posts With Thumb Image After Posts warm regards Josh