I’m using the most up-to-date versions of each of the plugins below (as of 22-09-11) and I’m using WP v.3.2.1.
AddThis Social Bookmarking Widget
Help your visitor promote your site! The AddThis Social Bookmarking Widget allows any visitor to bookmark your site easily with many popular services. Sign up for an AddThis.com account to see how your visitors are sharing your content–which services they’re using for sharing, which content is shared the most, and more. It’s all free–even the pretty charts and graphs.
I really recommend this. Sign up for an add this account and it displays your shares and clicks on your wp dashboard, very useful.
Used by millions, Akismet is quite possibly the best way in the world to protect your blog from comment and trackback spam. It keeps your site protected from spam even while you sleep. To get started: 1) Click the “Activate” link to the left of this description, 2) Sign up for an Akismet API key, and 3) Go to your Akismet configuration page, and save your API key.
This should be installed automatically, and it seems to work pretty well.
Adds a breadcrumb navigation showing the visitor’s path to their current location. For details on how to use this plugin visit Breadcrumb NavXT.
I think having breadcrumb navigation is always handy. You’ll have to tweak your actual php files to make it display in a post rather than having it in a widget.
BWP Google XML Sitemaps
A more lightweight Google XML Sitemap WordPress plugin that generates a Sitemap index rather than a single sitemap. Despite its simplicity, it is still very powerful and has plenty of options to choose.
Does what it says on the tin.
Category Redirect to Post or Page
Plugin for redirecting categories to different URLs such as a post or a page. Very useful for themes that only allow categories or pages to be added to a menu bar when you want to use posts that way you can create the category add it to the menu and which this plugin when its clicked the user will be directed straight to the full post you assigned to that category rather than the category page.
I installed this one because my breadcrumb navigation is based on categories, but I wanted a few to link to a post, not the category archives. You might find it useful for the same or different reasons. Easy to use.
Efficient Related Posts
A related posts plugin that works quickly even with thousands of posts and tags
I’m not sure this is actually a favourite, but it’s the plugin I’ve currently got installed for ‘Related Posts’. Except I’m not actually using it.
Google Calendar Events
Parses Google Calendar feeds and displays the events as a calendar grid or list on a page, post or widget.
Pretty easy to use, and shows a calendar in a post, page or widget, populated with events from one or more google calendars
Add mp3 players to posts, pages, and sidebars. HTML5 / Flash. Shortcodes, widgets, and template tags. See the help on the settings page for a full list of options.
Simple to use, and actually works as opposed to others I tried.
Simple Anti Bot Registration Engine
Lets you customise lots of things about new user registration to cut down on fake user profiles being created by spambots.
Secure HTML5 Video Player
An enhanced video plugin for WordPress built on the VideoJS HTML5 video player library. Settings can be easily configured with a control panel and simplified short codes. Video files can be served from a secured private directory.
Works pretty well, but you have to make sure the videos are in the right format, otherwise; fail!
Shortcode Exec PHP
Execute arbitrary, reusable PHP code in posts, pages, comments, widgets and RSS feeds using shortcodes in a safe and easy way
I COULDN’T LIVE WITHOUT THIS PLUGIN!!
Shares wordpress posts on your Facebook profile and/or pages and on Twitter
Bit of a pain to set up – you have to jump through hoops on both Twitter and Facebook, but I really recommend it anyway. Especially because you can choose for each post whether to share it, you can use a default share text, or set a custom one for an individual post, and you can share posts on Facebook as links, not status updates, which I think is a lot better.
Wickett Twitter Widget
Display the Twitter latest updates from a Twitter user inside your theme’s widgets. Customize the number of displayed Tweets, filter out replies, and include retweets.
WP Missed Schedule
Fix Missed Schedule Future Posts Cron Job
I installed this because when I was scheduling posts to publish in the future, for some reason they weren’t getting published. You may not have the same problem, but if you do, use this plugin; it fixes it instantly and posts appear bang on time.
A plugin which formats your site with a mobile theme for visitors on Apple iPhone / iPod touch, Google Android, Blackberry Storm and Torch, Palm Pre and other touch-based smartphones.
Does what it says on the tin, with a few customisation options. I might prefer a bit more customisation, but it’s free and displays your blog in a pretty simple and clear way on mobile phones.