I have been blogging for 4 years now, and had my share of plugins. Some I used for a short time, while some I used for quite some time already. Below are the ones that I’m still using:
Adds Facebook Like, Facebook Share, Twitter, LinkedIn Share, Facebook Recommendations. Automatic publishing of content to 30+ Social Networks.
Plugin to show a link to the last post from the commenters blog by parsing the feed at their given URL when they leave a comment. Rewards your readers and encourage more comments.
Google XML Sitemaps
This plugin will generate a special XML sitemap which will help search engines like Google, Yahoo, Bing and Ask.com to better index your blog.
This all-in-one SEO plugin gives you control over title tags, noindex/nofollow, meta tags, rich snippets, slugs, canonical tags, autolinks, 404 errors, rich snippets, and more.
W3 Total Cache
The fastest and most complete WordPress performance plugin. Dramatically improve the speed and user experience of your site. Add browser, page, object and database caching as well as minify and content delivery network (CDN) to WordPress.
Do you have your own favorites? Please tell us in the comments.