The federal government has been bombarded with scorn on Twitter this morning after its ministers used the hashtag "cash for you" to promote its School Kids Bonus.

Prime Minister Julia Gillard, Employment Participation Minister Kate Ellis and Mental Health Minister Mark Butler are among the government MPs who tweeted this morning that they were visiting local families or schools to "let them know" of the impending cash payment.

Ms Gillard's advisers, known as TeamJG on Twitter, tweeted: "Talking to parents & students about the Schoolkids Bonus at Marrickville West Public School #cashforyou."

#cashforyou has quickly become the top trending topic on Twitter in Australia today, ahead of usual placegetters Justin Bieber and local singer Reece Mastin. But the hashtag has drawn scathing responses from users.