PrinceHarry said:Reformist in Iran are not separate branch of Islam but rather muslims of the same sect, notably Shia Islam (the same as ruling hardliner).
Originally intended to provide legitimacy to what would otherwise be illicit affairs, the practice of temporary marriage has become a threadbare cover for prostitution and an under-the-table means of social welfare for poor women. The participants no longer follow the rules, which call for a mullah to read a particular blessing.
Not surprisingly, they have few options for preventing pregnancy or disease. According to official health ministry statistics in Iran, each year some 90,000 women apply for abortions at hospitals, and every day 221 abortions take place. Though no one claims these abortions stem directly from temporary marriages, health ministry insiders suggest prostitution may be to blame. Shahrbanoo Amani of Tehran, a member of the Iranian parliament, told reporters last year that "because temporary marriage is by definition temporary and is not a permanent agreement, usually men in this marriage do not like that a child is born. And in a case of unwanted pregnancy, the first victim is the woman, and the second, the child." http://www.villagevoice.com/news/0113,fard,23415,1.html
More information http://en.wikipedia.org/wiki/Nikah_Mut'ah
Iran's Interior Minister, Mostafa Pour-Mohammadi, has started promoting temporary marriage as a solution to the country's social problems. http://news.bbc.co.uk/2/hi/middle_east/6714885.stm
It is quite clear that it is NOT just a few muslim doing it. It is a de facto state policy, a perfectly legal marriage under Islamic Law.
He said not to generalise against Muslims
An article regarding a few people in one country doesnt represent every muslim
In fact, its less than 1 percent