Exploit notification
The practice of insta-joining/leaving warring corporations for the purpose of surprising war targets, or getting them in trouble with CONCORD, is considered an exploit from here on. Reports of this will be investigated on a case by case basis and warnings will be issued at the discretion of the GM. Repeated incidents may result in bans on accounts involved.
http://myeve.eve-online.com/news.asp?a=single&nid=2317&tid=1