It's not just up to judges to save "So You Think You Can Dance's" bottom performers; on Monday (July 20), fans on Twitter got to rescue one Stage and one Street dancer with their tweets.

This is a first for the FOX dance competition series. Host Cat Deeley spent the broadcast highlighting the bottom six dancers, and the viewers could tweet by using #Save[First Name] to try to keep their favorites on the show. The switch in rules meant four people walked away from the elimination round still in the competition.

Fans watching and tweeting during the East Coast airing of the episode spoke, and they rescued Street performer Neptune and Stage performer Moises Parra. That didn't earn any dissent from the judges.

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"I have to say that we totally and wholeheartedly agree with America's vote in who they saved tonight," Nigel Lythgoe says.

The judges went on to rescue Derek Piquette and Ariana Crowder, which meant "SYTYCD" sent Lily Frias and Darion Flores home.

FOX will incorporate this fan save into "So You Think You Can Dance" going forward, using the same format. Once Deeley reveals the bottom dancers  from each team, fans can tweet their support for a brief period to save two favorites.

"So You Think You Can Dance" airs Mondays at 8 p.m. ET/PT on FOX. On Tuesday, July 21, FOX is airing a special episode of the series to honor its 10-year anniversary.

Posted by:Terri Schwartz