Literary agent Nathan Bransford had a guest blogger on his blog this morning. Tracy Marchini shared 21 things an author can do with Twitter. But Tracy left a couple of things off the list. I’m sure there are more, but these two extra things are things that I do as well.

Install Twitter Tools into your blog if you are using WordPress. There may be a Blogger equivalent, but since I have a standalone blog domain name and use WordPress as my software, there is a Twitter plugin. You can tweet right from your blog and you can set the settings of Twitter Tools to post to Twitter every time you write a new blog post. It happens automatically so that you don’t have to manually type your blog post tweet.

But since No. 8 on Tracy’s list is to tweet the links to specific blog posts on your blog, I’ll add one more thing that you can do with Twitter Tools: Set your settings so that at midnight each night your blog posts all of your tweets for the day as an individual blog post. It’s a great way to attract additional followers on Twitter.

The second thing I’ll add to Tracy’s list is a Twitter app for Facebook. Use the Twitter Facebook app and every time you tweet you’ll also be updating your Facebook status. I’ve found that since I’ve been using this app my Facebook status is updated more often and I get more Facebook friends. Two more powerful uses of Twitter.

Do you Twitter? Follow me.