What's in a "t"?

Everything, it seems, when you run a high profile Twitter account with more than 103,000 followers.

Liberal senator Cory Bernardi. Credit:Alex Ellinghausen

And it's a lesson the ABC opinion website The Drum has had to learn the hard way, after it accidentally linked to a Twitter account promoting hardcore pornography.

The problem began when the @ABCthedrum account began tweeting about the Heart Foundation's decision to scrap it's venerable "tick", which for more than 20 years has been used to help Australians choose healthy food to eat.