A messageboard thread in which a band's fans invade a messageboard in an attempt to defend their band from criticism poured on it by other users of the website.
Originates from a 'Craine' posting on Drowned in Sound website.
The 'Craine Train' has led to other phrases being made involving rhyming band names with methods of transport eg. 'We Could Be Giants Robin Reliants' or the 'urbnri Hyundai'.