These are the steps I took to add the recent tweets block you see on the right of my blog page.

1. Created a new block with the Title and Block Description, "Recent Tweets."

2. Pasted the following code into the Block Body. I originally found the code here.

<div id="twitter_div">
<ul id="twitter_update_list"></ul></div>
<script type="text/javascript" src="http://twitter.com/javascripts/blogger.js"></script>

I recently wanted to add a variable to my book template with a list of contributors to a wiki page. My "wiki" is a node type and I am using the excellent revision moderation module to let users submit revisions to nodes. I really want to recognize those who submit revisions. To do so, I decided to add a list of revision authors on each wiki page.