Investigator's Tip: "Monitoring an opponent’s Twitter account is an important part of opposition research. If you would like to keep up with someone’s Tweets, but not actually publicly follow the author, try using Twitter to RSS. This service allows you to enter the name of a public Twitter account and create an RSS feed for popular RSS readers like Google Reader, Yahoo, Bloglines, and Newsgator." — Larry Zilliox, Investigative Research Specialists, LLC
Don't be a twit. Make your sweet tweets private.
Read up on how to protect your tweets here,
and don't approve any "twitter to RSS" requests.