Twitter has become the latest victim of internet 'porn spam' after several users decided to upload a controversial picture of a naked women and a toy version of the missing Boeing 777 (what she does with it, is even less appropriate).

The highly unsuitable picture was re-tweeted several times over the course of the past few days, and highlights just how difficult it is for a social networking service to effectively block images that are pornographic. Facebook has also faced similar problems in groups and news feeds, being subjected to hacked accounts unleashing a flood of pornographic posts.

As we saw recently, the popularity of the Oscar selfie showed how quickly an image can become viral on Twitter, and around the web.

The volume of people searching for the latest updates on flight MH370 has been immense, and as the intrigue continues, we are seeing it evolve into parody.

Users typing in "Missing Plane" on Twitter may find offensive images that mock the missing flight with images photoshopped to represent it in different ways. We have censored the offensive image below, however there may be other pictures that we have not discovered that are inappropriate.

This image was re-tweeted 319 times since March 16th, and has appeared on numerous feeds today. Can Twitter really ban images or is this the start of a dark path for the social network?