Thats all on paper. But are wud be good no. of people who are liable to file returns, but still dont file. Now it wud be impractical to catch the neck of each & every person who hasnt filed a return & check why he hasnt filed.By this kind of smses, may be they can scare the recipient. The recipient wud think that the Govt is aware of him, and may be he wud file a return & pay his dues honestly.Arre forget filing returns, there are people who earn & still dont even have PAN, & to make the compliance with PAN stricter they are constantly amending the provisions of the Act.