Complex sentence: In February 2013, Scalzi attracted media attention with a pledge to pay $5 to various charities and nonprofit advocacy organizations every time Day mentioned him; after others echoed this pledge, over $50,000 was pledged in under a week.
Split into simpler sentences: In February 2013, Scalzi attracted media attention with a pledge to pay $5 to various charities and nonprofit advocacy organizations every time Day mentioned him. After others echoed this pledge, over $50,000 was pledged in under a week.