it received became widely known as the "Tell Me Virus". The Wonder Girls had an extensive promotional schedule for their album, and in late 2007 they began performing their second single, "이 바보" ("This Fool"). MTV also began broadcasting The Wonder Life, a reality TV series starring the girls. 2008: Breakthrough In February 2008, the Wonder Girls joined their producer Park Jin-young for his month-long concert tour through Korea and the United States as special guests, where they filmed the music video for "Wishing on a Star" while in New York. "So Hot" was released on May 22, 2008. The song topped online charts soon after. In mid-2008, they performed on MBC's Show! Music Core, performing "So Hot" and "This Time". Due to a vocal cord injury, Yubin temporarily lip-synced her parts under doctor's orders. After a very short break, the Wonder Girls made a comeback in early fall 2008. The music video for "Nobody" was revealed, and the single was released simultaneously. They performed the following weekend on Show! Music Core, Music Bank and Inkigayo. The song went to No. 1 on KBS' Music Bank, staying there for four consecutive weeks, and also won Cyworld's "Song of the Month" award in September and October 2008. Like "Tell Me", "Nobody" also sparked a dance craze. At the 2008 Mnet KM Music Festival Awards, the Wonder Girls received three awards: the "Song of the Year" award, "Best Music Video" for "Nobody" and "Best Female Group".<ref name=mkmf>{{cite web|url=http://www.hankyung.com/news/app/newsview.php?aid=2008111638117&sid=01073305&nid=007&ltype=1&pkind=all |title='MKMF 3관왕' 원더걸스 "변치 않는 원더걸스 되겠다" |trans-title=MKMF Triple Winner Wonder Girls "Will Never Change" |last=Kim |first=Shi-eun |website=HanKyung.com |date=November 16, 2008 |access-date=November 16, 2008 |url-status=dead |archive-url=https://web.archive.org/web/20120214022924/http://www.hankyung.com/news/app/newsview.php?aid=2008111638117&sid=01073305&nid=007&ltype=1&pkind=all |archive-date=February 14, 2012 }}</ref> The group also won an award at the 2008 Golden Disk Awards for high digital sales. At the 18th Seoul Music Awards, the Wonder Girls won the Daesang ("Artist of the Year" award), the highest award offered, for "Nobody", in addition to two other awards. In October 2008, the Wonder Girls were signed by the Creative Artists Agency (CAA). By the end of 2008, they had earned ₩12 billion ($9 million US) as a group. 2009–10: Focus on international activities, touring and line-up changes The Wonder Girls tour began on February 28, 2009, in Bangkok, Thailand. Along with their mentor, JYP, they held concerts throughout the United States. The group then returned to South Korea, holding concerts in late March in Seoul and Busan.