http://news.bbc.co.uk/1/hi/world/europe/6427355.stm
good article ^^
explain about freedom of speech and some EU things.
excerpts:
The European Union, which Turkey is hoping to join, has long called for an easing of Article 301 - the law which prevents insults to Turkish culture - arguing that the law places severe restrictions on free speech in Turkey.
Turkish visitors to the site are now greeted with a message in English and Turkish reading "Access to www.youtube.com site has been suspended in accordance with decision no: 2007/384 dated 06.03.2007 of Istanbul First Criminal Peace Court".