Here is the link to the info that mt.gox used bots to manipulate price....(I know it is a big yawn....everyone figured this out a long time ago)
but for those that are interested here is the links
https://www.cryptocoinsnews.com/mt-gox-trading-bots-manipulated-bitcoin-price/also the wizsec security link on how they got this info for the above article
http://blog.wizsec.jp/2015/02/mtgox-investigation-release.htmland anyone more knowledgeable about this kinda bot useage and/or if/who/what exchanges 'may be' into this kinda thing ....
feel free to chime in ...(or not)