This really depends on the risk you're willing to take. This guy in the UK just received a four year prison sentence for copyright and trademark violations:
Zhong Li, a 35 year old Chinese national, was sentenced to four years imprisonment at Southwark Crown Court.
1. Section 92 (2)(B) and (6) of the Trade Marks Act - 12 months
2. Section 107 (1) (C) of the copyright, designs and patents act 1988 - four years
According to the flag on your profile, you're located in Abu Dhabi. Although the Qur'an does not mention trademarks and other intellectual property rights explicitly, several scholars, notably here on this forum, have argued that violations of intellectual property rights is equal to theft.
In accordance with the Qur'an and several hadith, theft may be punished by amputation of fingers, whole hands or feet, depending on the number of times it was committed and depending on the item of theft.
Should you happen to travel to China, you may face life in prison, if you redirect your newly acquired typo to your adult entertainment site:
http://www.dnforum.com/showthread.php?t=192116 (admittedly more due to the adult content than the typo).
Finally, in the land of the free and the brave, there's the Truth in Domain Names Act, for violations of which
John Zuccarini was sentenced to 2 1/2 years in prison.
It all depends on your personal preferences and attitudes towards risk. I do not doubt that typos can be highly profitable.