The IQ spam may arise when users click on the direct messages and decide to take the test resulting in users sending out direct messages to their friends without even knowing it. In the past 24 hours I have received 10 such messages from my friends, which goes on to show that it is affecting quite a lot of people.
If you are not sure whether you have been affected or not, go to your direct messages sent Inbox to see the messages that have been sent by you. In addition to that, also visit your connections page (click this link) and revoke access to any apps that you do not trust.
As always, tweet about this post to let your friends know about this Twitter IQ Spam problem .