Star Plus seems to be sabse aage in this genre with two shows- Sasuraal Genda Phool and Yeh Rishta Kya Kehlata Hai- topping their Trp charts. Apart from that Sony has Saas Bina Sasuraal and Baat Humari Pakki Hai. Even Zee is not behind with their show Raam Milayee Jodi.

Second is their treatment and plot. They do not have heavy material for drama. Though drama is an integral part of television shows, they rely more on cute/romantic scenes as well as heavy emotional scenes. They have all the elements to touch the emotional side of the indian masses. Also they rely heavily on light scenes. Or to be more precise they treat even very dramatic scenes in a very lighthearted way and hence makes the viewing enjoyable.
Third is their cast. Almost all of them have an ensemble which are so aptly fit in their respective characters that they look almost as if they are those characters themselves. Be it Suhana from Sasuraal Genda Phool or Dosti/ Tanya from Saas Bina Sasuraal. Or even supporting cast like Rajshri from YRKKH or even Badi Baa from Raam milayee Jodi. All actors have fitted so well into thier characters that its difficult to differentiate whether you are liking the characters more or the actors.
A couple of years back, Baa Bahu aur Baby blonged to similar genre and not to forget the show was a great success. The audience has always had a liking for such shows. And with current success of such shows once again shows that such kind of shows are here to stay. After all you need break from masaledaar food....!!!