The highest level financial fund managers and successful value investors such as Warren Buffett always get their information from fully verified sources. This starts, first and foremost, with the information provided by company management in news announcements, filings and other public communications that are all fully accountable to the SEC for accuracy and truthfulness. Top investment managers would never base their buying or selling decisions on unverified hearsay or off-handed comments of any third parties, and most certainly, not from the "opinions" of any anonymous Internet posters.