Here are my current best Wordpress plugins for 2010. You can visit the WordPress Plugin Directory to download the plugin that you want for your blog.
SEO Smart Links
SEO Smart Links can automatically link keywords and phrases in your posts and comments with corresponding posts, pages, categories and tags on your blog. SEO Smart links allows you to set up your own keywords and set of matching URLs. It also lets you to set nofollow attribute and open links in new window.
Google (XML) Sitemaps Generator for WordPress
This plugin generates a compliant XML-Sitemap of your WordPress blog. This format is supported by Ask.com, Google, YAHOO and MSN Search.
WP Super Cache
WP Super Cache is a static caching plugin for WordPress. It generates HTML files that are served directly by Apache without processing comparatively heavy PHP scripts. By using this plugin you will speed up your WordPress blog significantly. WP-Cache 2 caches the pages of your WordPress blog and delivers them without accessing the database. If your site is struggling to cope with the daily number of visitors, or if your site appears on Digg.com, Slashdot or any other popular site then this plugin is for you.
WordPress Backup
WordPress Backup is an essential plugin for all WordPress blog administrators. It performs regular backups of your upload (images), current theme, and plugin directories. Backup files are available for download and optionally emailed to a specified email. You can adjust the interval between backups and the email address to which the backups are sent. For database backup you can use WP DBManager.
Branded Login Screen for WordPress
Branded Login Screen for WordPress lets you use custom login screen instead of WordPress default. Branded Admin which lets you change the admin area is also available.
Contextual Related Posts
Contextual Related Posts WordPress plugin helps you display a list of contextually related posts for the current post. You can select the number of posts to display and if you want to automatically display the related posts in your content/feed. It doesn’t require the post to be tagged in order to display related posts and you can manually add related posts where you want them displayed
WP Comment Remix
WP Comment Remix adds to WordPress such features as Reply and Quote links for commenters. You can add a Reply link to each comment, which, when clicked, adds “@OriginalPoster”, and links it to the anchor of that comment. Clicking the Quote link has a similar action to the Reply link, but it adds the entire comment in a blockquote tag. You can choose how you want to order the comments for your readers. You can also separate the Trackbacks from the comments and move them to the bottom of the list, or remove them completely.
Akismet
Akismet is the comment spam fighter that comes built into Wordpress and it does a mighty fine job. Activate this plugin and you won’t need to moderate or captcha your comment submissions. Akismet does 99% of the work for you.
WordPress Popular Posts
WordPress Popular Posts is a sidebar widget to show the most popular posts in your blog. You can set its title (or leave it blank if you don’t want to use any), how many entries to show, whether to display or not comments count and/or pageviews for each entry listed, and to show (or not) an excerpt of each post’s title. You can list your posts either by comment count, pageviews or average daily views.
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