A website called rahil.ir, based in Iran, is recruiting people to be "martyrdom volunteers" to fight in Bahrain. Presumably this means suicide bombers.
The site helpfully describes the Bahraini government as being "a puppet of the Great Satan America and Israel."
So far, according to the site, 1938 people have pledged to sacrifice their lives for the cause.
It points out how Iran has been supportive of the other Arab revolutions, no matter if the demonstrators were Shi'a or Sunni. For obvious reasons, they don't mention supporting the people who are being shot in Syria.