Thank you for your response, Alex.
Here is the full text of what I see when I click "Frequently Asked Questions" on this page, which doesn't seem to help.
Is there some other resource I should check?
What if I don't want to use Social's comment display?
All of Social's features (broadcasting, comment display, looking for responses on Twitter and Facebook and the ability to log in with Twitter or Facebook) can be disabled on Social's settings screen.
Will Twitter Tools pull in my entire tweet archive from Twitter?
Twitter Tools starts archiving from the time you enable it. It does not try to download your entire tweet history. However, there is code in Twitter Tools that can be scripted to download and import tweets. You can put together the pieces with your own code to create the combination of features you desire. Here's an Gist to get you started:
What happened to the digest features?
The digest features never worked reliably and were removed in version 3.0. Another developer is welcome to make a plugin that uses the underlying features of Twitter Tools to implement digest features.
What happened to the default hashtags feature?
These are no longer needed in 3.0+ since the default broadcast message is now fully customizable in the Social settings. Add your hashtags to your default broadcast message template.
How do I use a URL-shortener like bit.ly?
Since Twitter Tools no longer does broadcasting, this is really a question for Social. As noted in that FAQ, Social uses the built-in "short URL" feature of WordPress that supports any number of services via their plugins.