Toosheh relies on the fact that the Government of Iran is incapable of blocking satellite television channels because they are way that most Iranians receive their daily news. The developers of Toosheh are a group called the Internet Freedom Pioneers. They are based in the United States, and is mainly composed of Iranian émigré activists. As such they know their own culture better than anyone else. The main thing behind Toosheh is that it broadcasts an MPEG every hour for anyone to download. While it doesn’t eliminate the larger problem at hand, which is that of government censorship of the Internet, it does appear to be a step in a positive direction, mainly because the Iranian Government seems to be incapable of firstly preventing the broadcasts, and secondly and more importantly, preventing their citizens from both accessing the channel, and decoding the content using software such as TOR, which is normally available in Iran, albeit difficultly sometimes.
To conclude, software such as Toosheh seems to be a good sign that government control of the media in Iran is quickly eroding. It is also a good thing, that they can’t block the satellites, and I’m sure they will disagree with me.