Digg Button – Allows you to add the Digg button anywhere in a post with just a simple code snippet.
Digg IT – Another plugin allowing inclusion of the Digg button.
JPF Add to Reddit – Allows readers to submit your posts to Reddit, if they are already logged in, it automatically posts the title and URL.
Share This – Adds multiple social bookmarking links and an e-mail-this function in one handy button.
Sociable – Adds the linking information for 61 social bookmarking sites.
Social Bookmark Buttons – Adds social bookmark buttons for Digg.com, Netscape.com, Reddit.com, Del.icio.us, Stumbleupon.com, Google.com, Socialogs.com, and Socialposter.com.
Social Bookmarks Plugin for WordPress – Gives you access to the social bookmarking icons.
Socializer Plugin – Adds the ability to post to nearly 40 social bookmarking sites.
SocialList – Lets you see which of your posts have been submitted to del.icio.us and Digg.
Socialogs.com – Allows you to have your entries submitted to Socialogs.com.
WP-Notable – Adds the icons for numerous social bookmarking sites to each post.
wphotspots – Tracks the activity of your posts on several social bookmarking sites.
DJ-Email-Publish – Once you publish on your WordPress blog, this sends the post as an email to your other blogs such as MSN Spaces.
Live Space Sync – Allows you to import all your posts to your Microsoft Live Spaces so you can advertise your blog to your contacts.
LiveJournal Crossposter – Automatically posts your latest entries to your LiveJournal account, or any other LJ software based site.
Vox Crossposter – Makes it so your posts also appear on your Vox account.
Xanga Crosspost – Allows you to have your posts appear on your Xanga account also.
RSS Feed Tools
©Feed – Adds copyright info to your feed and puts a digital fingerprint on it so you can search the web for content theft.
Add to Any Subscribe Button – Allows your readers to subscribe via just about any reader out there.
AddThis Sidebar Widget – Adds RSS info and social bookmarking to the sidebar.
Better Feed – Adds a “read more” button, a copyright notice, and a “Add to del.icio.us” link.
DeCat – Allows you to select certain categories to not be included in your feeds.
Feed Control – Gives you the ability to exclude posts from your feed, add pages and much more.
Feed Footer – Adds copyright and advertising to your RSS posts.
Feed Master – Assigns a number to your feed readers so you get a better idea of stats specific to them.
Feed Styler – Allows you to style your feed.
FeedBurner FeedSmith – Make sure all your RSS feed subscribers get counted along with the ones signed up via FeedBurner.
FeedStats – Gives you statistical data on your feeds.
Feedvertizer – Add text links to the end of your feed posts.
RSS Flashfeeder to Myspace – Feeds your last two posts to your MySpace page.
Slash Comments – Adds info to your feed about how many comments are on the post.
Subscribe-Remind – Adds a little reminder to the end of each post reminding readers to subscribe to your feed.