The LinkedIn post by Ryan Roslansky, head of content products at LinkedIn, pointed to Twitter’s own Friday blog post about “delivering a consistent experience on Twitter.”
Perhaps Twitter wants to separate itself from the business networking company after the recent password breach in which 6 million LinkedIn passwords were stolen. LinkedIn was recently slapped with a $5 million lawsuit by a user who claims LinkedIn deceived its more than 160 million members by having a security policy “in clear contradiction of accepted industry standards for database security.”
Still, the more likely reason is that Twitter and LinkedIn couldn’t come to an agreement over potential advertising revenue. In the last few months, Twitter has aggressively started pushing forward with initiatives that highlight partner content and feed its sponsored and promoted Tweet ecosystems. It’s possible Twitter wants to retain the value of its feeds on its own site, without giving that content to a potential competitor for ad dollars.
Article here : http://mashable.com/2012/06/29/twitter-drops-linkedin-partnership/