MyTwitter Wordpress Plugin
MyTwitter allows users to display their Twitter status updates (tweets) on their Wordpress blog and update their status through the Options page. It includes customization options including number of tweets to display and formatting options. It can be called as a function or used as a widget. You can follow MyTwitter on Twitter here. For installation assistance or to leave feedback, visit the project page. You can download MyTwitter here.
Blogtips via Twitter
A Twitter account at twitter.com/blogtips provides links to one or two blog posts or articles featuring blogging advice or tips every day. The blog tips include advice on general blogging advice, blog promotion, and also making money online.
Twitterfeed
If you’re a blogger that uses Twitter, you’ll want to check out twitterfeed, a service that feeds your blog to Twitter. Using twitterfeed, you can get your blog (or any other RSS or Atom feed) twittering. You login to twitterfeed using your OpenID and provide the service with your blog’s RSS feed and tell it how often to post to Twitter. The twitterfeed server will then check your blog’s feed at the specified interval and post any new items to Twitter, which no further action on your part.