Complex sentence: SawYouAtSinai is a Jewish online dating service that launched in December 2003 and is the organization responsible for providing the technology, methodology and platform for Jewish matchmaking throughout the world, including JRetroMatch.com, YUConnects.com, SeeYouInIsrael.com and the JSites.
Split into simpler sentences: SawYouAtSinai is a Jewish online dating service that launched in December 2003. It is the organization responsible for providing the technology, methodology and platform for Jewish matchmaking throughout the world, including JRetroMatch.com, YUConnects.com, SeeYouInIsrael.com and the JSites.