Themers/Designer - A simple example of the module put to use would be using the twitter_fetch_timeline call to retrieve a users timeline and insert the resulting text into the site_slogan variable.
$twarray = twitter_fetch_timeline('username');
$site_slogan = $twarray[text];
Placing this text nearest the top of a theme page such as page.tpl.php. Will subscribe the site slogan to the 'username's latest tweet posting.
Please note this can/does affect performance. Improvements to the documentation are welcome.