From the Americans for Responsible Solutions Facebook page:
It will be hard. But the time is now. Be bold. Be courageous. Americans are counting on you" - Like and share Gabby Giffords' handwritten testimony at the Senate Judiciary Committee on gun violence. Join her and Mark Kelly by texting SOLUTIONS to 90975
UPDATE: The Washington Post reports that the note was actually written by Giffords' speech therapist, contrary to what was earlier reported in this article.
h/t The Atlantic