I just discovered the WordPress External Links plugin and couldn’t be happier with it. The plugin only has a couple functions but the SEO benefit seems to really be amazing. The External Links plugin will add a “nofollow” tag to all of the links on your WordPress blog which tells search engines to not count the link against your page rank. An extra benefit of the plugin is the fact that it adds a small external link icon at the end of each external link so readers of your WordPress blog know that they will be leaving the site. One other function of the plugin is you can make all external links open in a new window though I chose not to enable this because I cannot stand when reading articles and when I click on a link and it opens a new window.
There are many tricks or little configuration items you can use to make your WordPress powered site more secure than it comes by the default install. One of those items is to require the login to happen over HTTPS and require that all WordPress admin traffic takes place over HTTPS as well. I personally also use a plugin called WP Block Admin to only allow users with certain credentials access to wp-admin so consider looking into that as well if you have areas of your site that are not in the admin section that require users to login like a forum or to leave comments.
I have had a problem with a personal WordPress blog I installed a long time ago but never got the chance to look into until recently which is the fact that the logon part of the site was not auto logging me on. Not only was the blog not auto logging me on but it was not remembering my password though it would remember my username. This blog has been around since before WordPress 2.5 and I have upgraded from time to time. I remember the issue started somewhere around the time that I upgraded from WordPress 2.5 to WordPress 2.6 so that is where I started the troubleshooting process and sure enough I was able to find the answer pretty easily. I had been in a rush when upgrading the site and once I had time to go back and read the documentation I found some configuration file options located in wp-config.php that had been added with WordPress 2.6. There were 3 security key configuration options added in WordPress 2.6 and fourth security key added in WordPress 2.7.