The Republican Study Committee (RSC) launched a Twitter Day iniative today with success. CNN's Political Ticker covered the event here:

The Republican Study Committee organized a "Twitter day" Monday with 68 of their members.
 
The theme of the day is "My commitment," where the members who have Twitter accounts will send out a tweet saying, "My commitment is" and then write about a subject they are passionate about. Rep. Tom Price, who chairs the Republican Study Committee, started the day by tweeting, "My commitment is health reform that empowers patients and not Washington."
 
The Republican Study Committee is a caucus of House conservatives who advocate for an agenda of conservative principles. The caucus has just over 115 members, but not all of them tweet. Throughout "RSC Twitter Day," the representatives will be using the hashtag "#RSC" to keep track of the tweets.

Another tweet came from Rep. Virgina Foxx: "My commitment: holding Washington accountable for its reckless spending & wasting taxpayers' $. hence my no-earmark pledge."

Check out TweetCongress to find some of the best Tweets of the day, including the following:

John Boozman: My commitment is to create a business friendly environment that produces jobs for hardworking Americans. #RSC

William Cassidy: My commitment is to an America which is freer, safer, and stronger.  An America where the People govern.  #RSC #latcot

James Jordan: my commitment is to make decisions in Congress that will benefit families across the country #RSC