I’ve installed and activated the plugins listed below. Thanks to Daniel Bachhuber for the idea to list all these on a dedicated page. Also, thanks to Andrew Nacin for pointing me to the WP-PluginsUsed plugin.
Akismet Anti-Spam 3.3
» Automattic (url)
Used by millions, Akismet is quite possibly the best way in the world to protect your blog from spam. It keeps your site protected even while you sleep. To get started: activate the Akismet plugin and then go to your Akismet Settings page to set up your API key.
Google Analyticator 6.5.2
» SumoMe (url)
Login LockDown v1.7.1
» Michael VanDeMar (url)
Adds some extra security to WordPress by restricting the rate at which failed logins can be re-attempted from a given IP range. Distributed through Bad Neighborhood.
Search Meter 2.13.2
» Bennett McElwee (url)
Keeps track of what your visitors are searching for. After you have activated this plugin, you can check the Search Meter section in the Dashboard to see what your visitors are searching for on your blog.
WordPress Related Posts 3.6.3
» Sovrn, zemanta (url)
Quickly increase your readers’ engagement with your posts by adding Related Posts in the footer of your content. Click on Related Posts tab to configure your settings.